Click here to calculate your
Body
Fat
Body Fat
Body fat measurements and the measuring tape are
recognized as superior methods for measuring "weight
loss". When one declares that they want to "lose
weight", what they often mean is that they want to lose fat. So, now
that you've had your body fat percentage measured, what does the number
really mean?
First, your body fat percentage is simply the
percentage of fat your body contains. If you are 150 pounds and 10%
fat, it means that your body consists of 15 pounds fat and 135
pounds lean body mass (bone, muscle, organ tissue, blood and everything
else).
A certain amount of fat is essential to bodily
functions. Fat regulates body temperature, cushions and insulates
organs and tissues and is the main form of the body's energy storage.
The following table describes body fat ranges and their associated
categories:
*General Body Fat Percentage Categories
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Classification
|
Women (% fat)
|
Men (% fat)
|
|
Essential Fat
|
10-12%
|
2-4%
|
|
Athletes
|
14-20%
|
6-13%
|
|
Fitness
|
21-24%
|
14-17%
|
|
Acceptable
|
25-31%
|
18-25%
|
|
Obese
|
32% plus
|
25% plus
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*American Council on Exercise
Knowing your body fat percentage can also help you
determine if your weight loss goals
are realistic. Remember, weight loss doesn't
always mean fat loss. For example:
Let's say you're a 130# woman with 23% body fat, and
you goal is to "lose 20 pounds":
Initial body fat: 130# x 0.23 fat = 30 # body fat
Lean body mass: 130# total - 30# fat = 100# lean
body mass (bones, organs and all else)
Goal: 130# - 20# = 110 pounds
As you can see, the goal of losing 20 pounds is not
realistic or healthy. At 110 pounds, this woman still requires
100# of lean body mass (bones, organs, etc.), but would only be carrying
10#, or only 9% body fat. From the chart above,
you can see that this is a dangerously low percentage.
A better goal might be for the woman to reduce her
body fat from 23% to 18%. In this case:
130# x 0.18 = 23 # body fat
100# lean body mass + 23 # = 123# goal weight
So, for this individual to achieve a lean, but
healthy 18% fat, she would need to lose only 7 pounds of fat, reducing her
weight from her current 130 pounds to 123 pounds. Losing more
than 7 pounds means losing lean body mass (usually
metabolically-active muscle tissue), which is clearly not desirable.
So before you decide that you need to "lose
weight", remember to consider that "weight" consists of
both lean body mass and body fat. Try to keep your weight loss
goals realistic, and remember, keep the calorie-burning muscle, and lose
only the fat.
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