uhh maybe because you haven't been doing your daily sit ups:) or you might have too much body fat. or you aren't working out enough. but i dont know. you could try Google-ing it...
In women a healthy body fat percentage ranges from 21 percent to 33 percent. In men, a healthy percentage is between 8 percent and 25 percent.
97 percent
11 percent to 16 percent
The average percentage of body fat for women is 21 to 31 percent. The average for men is 18 to 24 percent. The body fat can change depending on if you are athletic or not.
11 percent to 16 percent
11 percent to 16 percent
11 percent to 16 percent
the percentage of a kids body is usually 70%
For average adult males the body fat percentage is 18 to 24 percent. It is suggested however that the optimal body fat percentage for an adult male should be around 14 to 17 percent.
9 percent
Obesity is normally determined by Body Mass Index. Accurate determinations of body fat percentage are highly problematic. Typically a person with BMI > 30 would be considered obese and would have a body fat percentage of 25% or more.
60 percent of your body is water.