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Body fat percentage

By Paul Rogers, About.com

Created: February 13, 2007

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Definition: Body fat is a lipid (fat) produced in the body, and this may be influenced by diet, exercise and genetics. Body fat percentage is that percentage of body mass that is not made up of bone, connective tissue and fluids, that is, everything else. This is referred to as 'fat-free mass'. In bodybuilding and weight training, muscle definition is enhanced when body fat levels are low -- below about 6 percent in men and 12 percent in women.

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