Because they have almost zero percent body fat since they are all muscle. This makes it hard for them to swim since body fat is a large part of what helps you float.
The average percent of body fat on women is between 10 and 13 percent.
There is no such thing as zero body fat. A certain amount of fats is healthy and necessary. The brain is made mostly of fats.
12-8 percent body fat
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.
Fat supplies 60 percent of the body's energy
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.
Percent means 'out of one hundred' so to say that someone's body is 20% fat means that for every 100kg, 20kg will be fat. If the person weighs 50kg, 10kg of that is fat. If you know what percent body fat you are, and how much you weigh, then your mass of fat is 'percent fat divided by 100 then multiply by your mass in kg.'
21.25 pounds of fat
4
8% Body fat is means you are very physically fit, or just skinny. Im on the football team and I have thirteen percent body fat.
11 percent to 16 percent