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Body mass index pinch testing: BMI Pinch Test

But how do you get a firm and accurate assessment of body fat?

Step 5 To calculate body fat percentage, divide by the body density, then subtract and multiply by Kasch. Kind of. Unless you're really into math, ihdex the formulas work doesn't really matter. The technician takes measures by grasping a fold of skin and subcutaneous fat with the thumb and forefingers and pulling the fold away from the underlying muscle, then pinching it with the caliper and taking the reading within 2 seconds. If not, it's not an indication you should go on a crazy fad diet or try to have a perfect body. It may be easier to have a friend or family member help.

  • They are also very expensive. What it is: Dual-energy X-ray absorptiometry DEXA is traditionally used to determine bone density and assess osteoporosis risk, but it can also be used to look at body compositionsays Dr.

  • Need more reason to consider knowing your body composition? What it is: A mathematical measurement that adjusts your weight for your height.

  • A percentage over 32 percent is a sign of obesity Ace Fitness. Close this dialog window View All 1 of 14 Keeping track.

  • Find out about diagnosis, the complications it may cause, and more.

  • Visceral Fat. Tape measure.

How to use skinfold thickness to determine body fat percentage

To take this measurement, raise the arm above the head and testign have the partner pinch the skin just below the nipple area on the side of the body. Images and video We have images and videos of all the measurement sites Watch Videos. If you buy through links on this page, we may earn a small commission. Lean Body Weight:.

  • These sites are somewhat different for men and women because gender influences where fat is stored. We include products we think are useful for our readers.

  • The idea is that the more body fat you have on your body, the thicker this skin fold will be, so then when you put those measurements into a body fat calculator, you will get an estimate of what your total body fat percentage is.

  • MRI or CT scans.

  • When too much body fat accumulates, however, it can lead to obesity and obesity-related diseases, like type 2 diabetes and heart disease. The lesson: Don't focus too hard on the number; focus on the changes in the number.

What it is: For women, the ideal waist measurement is less than 35 inches; for men, less than If you have too mas body fat, you may increase your risk of developing hypertensionhigh cholesteroldiabetes, and heart disease. Medically reviewed by Alana Biggers, M. What's the best way to calculate your body fat? In January, I did a little comparative test and had my body composition tested two ways, back to back.

What is Subcutaneous Fat? The 11 Best Smart Scales of Masss you're here, add to it the "bikini bridge," described as body mass index pinch testing one Tumblr puts it—there's a "graceful space created by a woman's hip bones suspending bikini bottoms from their abdomens. Visceral Fat. The technician takes measures by grasping a fold of skin and subcutaneous fat with the thumb and forefingers and pulling the fold away from the underlying muscle, then pinching it with the caliper and taking the reading within 2 seconds.

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Step 6 Interpret the results of your calculations. It all depends on the person who's doing it—if a trainer uses one on you, let's hope they know how to use it correctly. Taking measurements in ascending or descending order on the body, and then measuring a second time in the same order, can help you avoid the problem of retesting too soon.

Do they stay put or do they fall? Want a simple way to estimate your body fat percentage, no formulas required? This figure is directly related to health outcomes, including the risk of developing obesity, hypertension, stroke, heart disease and type 2 diabetes. By Jessica Migala Updated September 29,

Gently press the area and find the ridge of the hip, going just above the bone. BMI Takeaway We include products we think are useful for our readers. To calculate body fat percentage, add your waist and hip measurements, and then subtract the neck measurement to determine your circumference value. What it is: If you have a six-packthen you're fit. Pinch that spot diagonally, or have your helper do it.

So once you have all your measurements taken and recorded, then it's time to put those measurements into terms that mean something for you. Experts separate the legit from the ridiculous. If I wanted to lose that at a modest rate of 1. The Idiots Guide To Testing Your Body Fat If you're about to embark on a fitness and diet program, one tracking measurement that you'll want to make sure you're doing is to test your body fat percentage. What it is: A fancy term for a machine that sends electricity through your body and back to the machine. What to do: Look at yourself in the mirror.

Fat Caliper Help

It should be snug but not too tight. Up Next Cancel. Release the caliper's triggers and record the reading.

  • These machines take cross-sectional images of the body and can even measure intra-abdominal fat.

  • Seltzer says. Inexpensive, accurate and easy to administer with a special caliper, the test determines a person's level of body fat.

  • What to do: There's no reason to stand in the mirror and try to stand in such a way you can spot a gap, and critics point out that it can be a knock to your body-image and even trigger eating disorders.

  • Thigh Watch The Video - Triceps As the back of the triceps is one place many people tend to store most of their body fat, for this one you'll simply pinch the back of the arm about halfway between the shoulder and the elbow where you can tell most of the fat is located.

Get exercise tips to make your workouts less work and more fun. The caliper method—which you can learn to do yourself—measures skin folds and puts those measurements into a formula. Replay gallery. What to do: These may be available in a research setting, but there are some mobile labs in limited areas of the country. Squeeze the caliper until the trigger sets.

Continue Shopping Checkout Now. What are your concerns? What's important to remember is consistency. Perhaps the most accurate method for determining body fat percentage is with magnetic resonance imaging MRI or computerized tomography CT scans.

Take the Measurements

Though BMI may overestimate body fat in muscular individuals, it may underestimate body fat in other populations Chang et al. Interpret the results of your calculations. Skinfold thickness results rely on formulas that convert these numbers into an estimate of a person's percentage of body fat according to a person's age and gender. You also may not like having a test under water.

The weight recorded can then be used to calculate your body fat percentage. Yancy doesn't use waist-to-hip ratio much anymore. Your BMI is your body mass index. The very first thing you'll need to do is get a hold of some skin fold calipers.

Chest Chest Diagonal fold, midway between upper armpit and nipple. Obesity can raise your risk for serious diseases like diabetes. One criticism is that it's just not convenient to use. Abdomen Abdomen Circumference just above the navel. This approach is more time-consuming, but it may be slightly more accurate.

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Use a vertical fold. There isn't much of a difference, but you should note if you do something different from normal and use that method in the future to stay consistent. Breathe out and take the measurement.

A caliper is a tool that measures skinfold thickness at various parts on the body. Does muscle really weigh more than fat? One criticism is that it's just not convenient to use. Male Female. Variability between technicians it is recommended that the same professional take your measurements consistently Variability between sites measured on the body Different equations can be used Readings may not be accurate on people who are either very lean or have obesity Cheaper calipers typically provide less accurate measurements.

Although skinfold calipers range in price from less than tesying dollars to several hundred dollars, the cost of your equipment doesn't necessarily indicate its accuracy. Chest and biceps are additional sites that are sometimes used. Similarly, just like other trends, this can affect your self-image. Many formulas have been devised to estimate body fat percentages from skinfold tests.

Gently press the area and find the ridge of the hip, going just above the gody. Other research indicates it's as good as a skin fold caliper test, but the downside is it's more expensive skin fold tests are likely free at your gym. While useful in some situations and easy to calculate, your BMI may not be a very reliable indicator of your overall health. What it is: Women who have a waist-to-hip ratio of above 0. It matches the accuracy of underwater measurement at within 1 percent of body fat for both adults and children. Underwater weighing or tools like the BOD POD are the most accurate, but also the costliest unless insurance covers them. Locate the Sites for the Pinch Test.

Timing Is Everything

Air displacement plethysmography. What it body mass index pinch testing Take a roll of quarters boddy place them in the space in your collarbone. Locate the three skin fold sites to be pinched with the caliper. If a second measurement varies from the first by more than 1 millimeter, wait and measure the site a third time. Dual-energy X-ray absorptiometry DEXA is traditionally used to determine bone density and assess osteoporosis risk, but it can also be used to look at body compositionsays Dr.

Many formulas have pinch testing devised to estimate body fat percentages from skinfold tests. Regardless of your body fat percentage, there are things you can do at home to maintain a healthy weight:. Here's how calipers estimate your body fat, their pros and cons and everything you need to know about actually taking and calculating the measurements. Read this next. What to do: There's no reason to stand in the mirror and try to stand in such a way you can spot a gap, and critics point out that it can be a knock to your body-image and even trigger eating disorders.

  • The pinch test technique is one of the most popular ways to estimate body composition.

  • The percentage that it estimates should be within 1 percent of body fat for both adults and children. Rollover below for detailed instructions on how to use a caliper correctly.

  • File this one away in the " bogus " file with the belly button challenge and thigh gap.

  • Make sure you measure the largest part of each area.

Linear Software will not be body mass index pinch testing bkdy for any injury or problems resulting from the use of Body Tracker, My Workout Yesting, or this web site. Caliper Procedures All calculator measurements should be made on the right side of the body Caliper should be placed 1 cm away from thumb and finger, perpendicular to skinfold, and halfway between crest and base of fold Pinch should be maintained while reading the caliper Wait 1 to 2 s and not longer before reading caliper Take duplicate measures at each site and retest if duplicate measurements are not within 1 to 2 mm Rotate through measurement sites or allow time for skin to regain normal texture and thickness Source: American College of Sports Medicine. Some formulas are based on specific populations, such as female athletes, for example, and they won't give an accurate result to someone from the general population. According to the American Council on Exercise, it has a 2.

Become a member. Kind of. The accuracy of these tests may depend on the type of calipers being used, the competence of the tester, and a person's level of hydration at the time of the test. Do they stay put or do they fall? Medically reviewed by Saurabh Sethi, M.

Take the Measurements

More testimg that later. The pinch test technique is one of the most popular ways to estimate body composition. But this technology is also available for at-home scales mazs handheld devices. Here are 13 other tests—some common, some trendy, some you'll remember from gym class—that measure body fat, and how accurately they can tell you whether you're carrying around too much fat. Parrillo Caliper Method mm Chest Chest Diagonal fold, midway between upper armpit and nipple Abdominal Abdominal Vertical fold, one inch to the right of navel Thigh Thigh Vertical fold, midway between knee cap and top of thigh Bicep Bicep Vertical fold, halfway between shoulder and elbow, directly on bicep Tricep Tricep Vertical fold, midway between elbow and shoulder Subscapular Subscapular Diagonal fold, directly below shoulder blade Suprailiac Suprailiac Diagonal fold, directly above iliac crest Lower Back Lower Back Horizontal fold, directly over the kidneys, and 2 inches to the right of spine Calf Calf Vertical fold, inside of leg on largest part of calf.

Sit vody a platform and expelling all your breath submerge, crunch down, and grab onto two handles at the bottom of the pool. Share index pinch testing Gallery Pinterest Facebook. The American Council on Exercise recommends continued testing until you get two measurements that are less than 1 millimeter apart. What to do: You can find a BMI calculator here. It's important to not repeat any single measurement too soon; fat tissue needs at least 15 seconds to redistribute to its normal thickness before it can be re-measured accurately.

Body fat percentage versus BMI. From there, the device calculates the percent of fat versus lean tissue you have. To determine body fat percentage using these measurements, you'll first need to calculate body density using the Jackson-Pollock equation:. More on that later. Skip slide summaries Everything in This Slideshow.

Locate the Sites for the Pinch Test

Skinfold Measurement Accuracy. Step 3 Release the caliper's triggers and record the reading. They are also very expensive. Similarly, just like other trends, this can affect your self-image.

Are You a Healthy Weight? All rights reserved. A mathematical measurement that adjusts your weight for your height. What it is: Dual-energy X-ray bodj DEXA is traditionally used to determine bone density and assess osteoporosis risk, but it can also be used to look at body compositionsays Dr. So there you have all the information that you need to know to accurately figure out how much body fat you have. Interpret the results of your calculations. You can use the average of these numbers if you like or just use whichever you prefer.

  • Achieving these other goals will help motivate you to stick with your program and make the process and your fitness lifestyle more satisfying. It's important to not repeat any single measurement too soon; fat tissue needs at least 15 seconds to redistribute to its normal thickness before it can be re-measured accurately.

  • Meg Campbell. Images and video We have images and videos of all the measurement sites Watch Videos.

  • The reason: it's harder to accurately measure two places, especially when it's sufficient to worry about only one your waist.

  • Yancy doesn't use waist-to-hip ratio much anymore.

  • Linear Software will not be held responsible for any injury or problems resulting from the use of Body Tracker, My Workout Trainer, or this web site. Are You a Healthy Weight?

  • Make sure you measure the largest part of each area. For lean bodybuilders, I use the nine-site Parillo equation.

Stomach stapling is one of the oldest types of bariatric surgery. What it is: Wrap one arm around your back. Take the Measurements. Dual-energy X-ray absorptiometry DEXA is traditionally used to determine bone density and assess osteoporosis risk, but it can also be used to look at body compositionsays Dr. The pinch test technique is one of the most popular ways to estimate body composition. If you've spent any time reading health and fitness information, you know by now that it's body fat that you're targeting. Combined with your entered height, weight, age, and gender, the scale then uses an equation to provide your body fat percentage.

You should aim to take body fat tests once every weeks as this is about the time it would take to see a noticeable changes occurring if hard work is put in. In January, I did a little comparative test and had my body composition tested two ways, back to back. If you are seeking medical advice, please visit your healthcare provider or medical professional. Scale results may also vary wildly compared to results from other body fat percentage measurement methods. It's with this tool that you'll use to gently pinch the skin creating a 'skin fold', upon which you'll place each arm of the calliper.

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The skinfold test requires special calipers. That's where the question comes in. Pibch reviewed by Kathy W. Yes, according to a large consensus statement released from a group of organizations like the American Diabetes Association. Another issue: if you're especially muscular and fit hello, Serena Williamsyou'll naturally weigh more since muscle tissue is denser than fat.

  • A skin-fold test is done using a tool called calipers to pinch different areas of your body and measure body fat. What it is: Women who have a waist-to-hip ratio of above 0.

  • There are various ways to estimate body fat percentage, ranging from simple measurements to expensive tests.

  • Likewise, a muscular athlete with a low body fat percentage may weigh more than traditional height-weight charts deem healthy. What it is: Dual-energy X-ray absorptiometry DEXA is traditionally used to determine bone density and assess osteoporosis risk, but it can also be used to look at body compositionsays Dr.

  • Squeeze the caliper until the trigger sets. If you're about to embark on a fitness and diet program, one tracking measurement that you'll want to make sure you're doing is to test your body fat percentage.

What to do: There's no reason to stand in the mirror and try to stand in such a way you can spot a gap, and critics point out that it can be a knock to your body-image and even trigger eating disorders. By Jessica Migala Updated September 29, When you lower your body fat percentage, you'll end up looking more fit, whether you got there by losing fat, gaining muscle, or a combination of both. According to the American Council on Exercise, it has a 2.

All of these factors can lead to tfsting in reliability, indwx, or both. In addition, over different equations are used to estimate body fat from calipers, and people measure different sites among the seven. If you don't have a pro at your disposal, grab a friend and learn how to measure each other's body fat using this article as your guide. The three main skinfold sites for men are the chest, taken diagonally midway between the top of the underarm and the nipple; the thigh, taken vertically midway between the hip and knee along the front of the leg; and the abdomen, taken vertically an inch to the right of the navel. But consider making attainable progress goalstoo, like getting through a training program without skipping workouts, or eating a vegetable every day. Imagine a vertical line running straight down through your right nipple. That's just one reason why your weight on the scale or a set of measurements doesn't necessarily give a true picture of your health.

You'll need a helper for this. Kind of. Body mass index is a tool best used to estimate population-based rates of weight correlated to height and not a tool designed to assess obesity or underweight in single individuals in a clinical setting in the absence of other clinical measures Piers et al. Validity assessment of a portable bioimpedance scale to estimate body fat percentage in white and African-American children and adolescents. These are easier to control than outcome goals, like achieving a certain body fat percentage by a certain date, which rely not just on the work you put in but a whole host of biological processes that happen under the surface.

How Do Calipers Work?

The pinch testing advantages are:. You could use one of those hand-held devices that are so popular in many health clubs, however it's important to understand that these tend to be highly inaccurate and can be largely swayed by drinking even just one glass of water. Not only did I have my overall body fat percentage, but I knew that my belly had a higher percentage of fat than my thighs.

Thanks for your feedback! These tests are tesring often used for the sole purpose of measuring body fat. Skinfold Measurement Accuracy. Continue Shopping Checkout Now. Each of these formulas is built upon fairly complex mathematical equations which take the sum of the caliper measurements and apply them to a constant. Yancy doesn't use waist-to-hip ratio much anymore.

READ TOO: Esrd Abnormal Labs For Hypothyroidism

Since I do it that way every time, I'm able to be consistent. Gastric sleeve and gastric bypass surgery…. Step 5 To calculate body fat percentage, divide by the body density, then subtract and multiply by Kasch. Kind of. He earned his B. Hydrostatic weight.

What it is: The simple explanation is that it looks like an egg that you sit in while wearing your swimsuit, master of lomass tips to lose weight Dr. The final region to test is the subscapular region which is just bocy below where the bone of the shoulder blade is located. Medically reviewed by Saurabh Sethi, M. Subprailiac This location is on the front of the body just above where you see the bone of the hip. Chest Chest Diagonal fold, midway between upper armpit and nipple. Here are 13 other tests—some common, some trendy, some you'll remember from gym class—that measure body fat, and how accurately they can tell you whether you're carrying around too much fat.

You may want to ask a friend or family member to help. Meg Campbell. Wrap one arm around your back. What to do: Look at yourself in the mirror. Bioelectrical impedance is convenient, cost-effective, and quick; and operation requires little knowledge.

The msss measures which should be taken two or three times at each site and index pinch averaged are then incorporated into equations to predict percent body fat. Stomach stapling is one of the oldest types of bariatric surgery. You may also do a seven-site measurement. Body mass index is a very convenient way to measure obesity rates in a population but should not be used by itself to categorize an individual. Pinterest Facebook.

Here's how body fat is measured and what that number actually means. Related Articles. Close this boody window View All 1 of 14 Keeping track. What it is: Wrap one arm around your back. If you use a different caliper, you can get a different result. A fancy term for a machine that sends electricity through your body and back to the machine. Choose a test, choose a formula, and stick with it!

Find out just how to use these tools. Fat Caliper. Plug the data on the person you tested into the appropriate formula, do the calculations, body mass index pinch testing then look up the results on a chart to get the resulting body fat percentage. Here's how calipers estimate your body fat, their pros and cons and everything you need to know about actually taking and calculating the measurements. How Do Calipers Work? Many health clubs still use good old calipers, which pinch areas on your body to determine your body fat.

All this math can be tricky, so keep in mind that there are always online calculators to help you figure it all out. Well, sometimes. Are You a Healthy Weight? Your Guide to the Gastric Bypass Diet.

For people who carry more body fat than most of the population, I prefer the four-site Durnin and Womersley system. Medically reviewed by Saurabh Sethi, M. Problem is, those are notoriously inaccurate. Calculating Body Fat Percentage.

Wrap one arm around your back. You can use the average of these numbers if body mass index pinch testing like or just use whichever you prefer. Getting on the scale may be useful in helping you gauge whether you've lost weight, gained a few pounds, or are holding steady, but it won't give you insight into your body composition -- the relative proportion of fatty tissues and lean mass in your body. Christine Mugnolo.

Since the test is about water displacement, bod pocket of air, index pinch testing your body or outside, gets translated as fat in the system. A caliper is a tool that measures skinfold thickness at various parts on the body. While the standard error for the skinfold test is 3. There are various ways to estimate body fat percentage, ranging from simple measurements to expensive tests. Neck Neck Circumference of relaxed neck, with tape measure slightly down in front.

The test itself consisted of three individual tests and pinch testing out the results, unless there was a notable outlier, which would be removed from the average. Dual-energy X-ray absorptiometry DEXA is traditionally used to determine bone density and assess osteoporosis risk, but it can also be used to look at body compositionsays Dr. Inexpensive, accurate and easy to administer with a special caliper, the test determines a person's level of body fat.

There are options to test your body composition, body mass index pinch testing why would you, what are the pros and cons, and masss they reliable? What to do: While one measure may not tell you the whole story, if you're trying to lose weightthe calipers should pinch less and less as you repeat the test over time. If possible, find a certified trainer who has experience and a high quality tool. The results can also determine how much visceral fat you have, the dangerous fat around your waist that's linked to diabetes and heart disease.

What to do: You're not going to buy a Bod Bpdy for your house, but you can find one at sports and fitness locations near you. A study published in the European Heart Journal found that both waist-to-hip ratio and waist circumference were associated with heart disease risk, and researchers recommended that doctors incorporate these measures of obesity into cardiovascular disease assessments. A fancy term for a machine that sends electricity through your body and back to the machine. Pinch that spot diagonally, or have your helper do it.

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One criticism is that it's just not convenient to use. Skinfold Measurement Accuracy. These tests are not often used for the sole purpose of measuring body fat. Open the calipers before removing them from the skinfold.

  • Table of Contents View All. If not, it's not an indication you should go on a crazy fad diet or try to have a perfect body.

  • Utilizing The Body Fat Formula Tezting once you have all your measurements taken and recorded, then it's time to put those measurements into terms that mean something for you. While useful in some situations and easy to calculate, your BMI may not be a very reliable indicator of your overall health.

  • For example, if your waist is 30, your hips are 36, and your neck is 13, your circumference value would be Repeat the Measurements.

A fun way of measuring your waist-to-height ratio. The National Strength and Conditioning Association is proud to work with our outstanding partners and thank them for their continued support. Some formulas are based on specific populations, such as female athletes, for example, and they won't give an accurate result to someone from the general population. Skinfold Measurement Accuracy.

Bocy should fit around your waist. Step 2 Grab each skin fold using your thumb and index finger. This formula can be utilized in three-site, four-site, and seven-site tests. The lesson: Don't focus too hard on the number; focus on the changes in the number. The tester pinches the skin at the location site and pulls the fold of skin away from the underlying muscle so only the skin and fat tissue are being held. Obesity can raise your risk for serious diseases like diabetes. Achieving these other goals will help motivate you to stick with your program and make the process and your fitness lifestyle more satisfying.

The data is valuable because it reflects a change in your progress, not because of the actual number. The weight recorded can then be used to calculate your body fat percentage. Learn what the term "skinny fat" means, what causes it, what its health consequences are, and the risks it may introduce. Does it work?

The caliper method—which you can learn to do yourself—measures skin folds and puts those measurements into a formula. Body fat tessting ranges. While the average non-athlete can trust that they won't get a false "overweight" result, given the limitations, you should still interpret your results with caution. Skinfold thickness results rely on formulas that convert these numbers into an estimate of a person's percentage of body fat according to a person's age and gender. Trainers and coaches commonly turn to skinfold calipers for assessing body composition. You also may not like having a test under water.

  • Some formulas are based on specific populations, such as female athletes, for example, and they won't give an accurate result to someone from the general population. Ideally, when you lose weight, you'll lose as much fat as possible, and as little lean mass as possible.

  • Open the calipers before removing them from the skinfold. Ryan Newhouse - health writer, MyNetDiary.

  • What isn't fat mass is considered "lean body mass," which consists of your bones, muscles, hair, water, and miscellaneous stuff.

  • What it is: Many health clubs still use good old calipers, which pinch areas on your body to determine your body fat.

Body fat percentage versus BMI. What it is: A fancy term for a machine that sends electricity through your body pinch testing back to the machine. The American College of Sports Medicine has shared guidelines for body fat percentage by sex and age. What it is: A mathematical measurement that adjusts your weight for your height. With fitness and health in mind, she is an adventurous eater who is just trying to teach her kids and dogs that a Happy Meal is not a food group.

Use a measuring tape to find each site, and mark them precisely with an eyebrow pencil or a washable marker. The skinfold test is based on the premise that roughly half of total body fat is subcutaneous, or lies just below the skin. It's OK to use it, if only to put a number to the cosmetic changes you see in the mirror or track the effectiveness of your nutrition and training. You'll need a helper for this. Seltzer says. But washboard abs require an ultra-low body fat percentage, a serious dedication to daily exercise, and a very calorie-restrictive diet.

Locate the Sites for the Pinch Test

Are You a Healthy Weight? Experts separate the legit from the ridiculous. Sit on a platform and expelling all your breath submerge, crunch down, and grab onto two handles at the bottom of the pool.

For example, if your waist is 30, your hips are 36, and your neck is 13, your circumference value would be What it is: If you have a six-packthen you're fit. From there, the device calculates the percent of fat versus lean tissue you have. Sign Up. Use that number to gauge progress, because the scale doesn't always tell the whole story.

So no, it's not just muscle! The data is valuable because it reflects a change in your progress, not because index pinch the actual number. There isn't anything wrong with it, but it shows a misunderstanding about what a person's body fat percentage means and how it's measured. Scale results may also vary wildly compared to results from other body fat percentage measurement methods.

A body fat measurement can be useful for tracking your weight-loss progress because, unlike the scale, it tells you how much of your weight is fat and how much is muscle and other good stuff. Sort of. Skinfold calipers measure skinfold thickness at various sites on the body. Place the pads of the open calipers perpendicular to the skinfold, just above or below your fingers, and read the measurement to the nearest half of a millimeter. Does muscle really weigh more than fat?

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