All About Body Fat
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Two women who are 5-feet-7 and weight 150 pounds may seem very different, depending on their body composition. It can be a tennis player with rock-hard muscle and 10 percent body fat, the other may be a drug addict who bid on eBay exercise equipment, but never made any purchases - and therefore is a soft, spongy, 30 percent body fat.
Knowing the composition of your body can give you a rational basis for choosing a goal weight, as opposed to picking a weight off the air, like many people. For example, if you are a woman and a test body fat shows that you have 115 lbs of lean body mass, it is clear that your goal weight of 125 pounds is quite unrealistic, not to mention unhealthy. Even if you lose inevitably certain muscles that you remove the fat, the weight of your bones, organs and other tissues of the body lean is not going to change. With about 115 pounds of lean tissue, your dream weight of 125 would you somewhere around 8 percent body fat - too small for a woman.
If you try to lose weight, have your body fat tested every six months is a good way to track your progress. (Do not take the test more often because, unlike scales, tests body fat are not sensitive to small changes.) A test of body composition is more useful than the magnitude because distinguishes fat loss from muscle or water loss. If you are on a weight loss plan that does not include strength training, much of the weight you lose is likely to be muscle, so your weight may overestimate the scale of your progress.
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On the other hand, if the lifting part of your program, you get discouraged by many figures on the scale. Disport all your efforts to cut calories and work your weight can only decrease - or may even stay the same or grow upward. This, of course, became the muscle is more dense than fat. A body - fat can help assess your true progress. Considering that the scale may say you're lost 1 lb, body fat test can tell you that you have actually lost 4 pounds of fat while gaining 3 pounds of lean mass. A test of body fat may be evidence of your progress when the scale suggest the opposite.