Survivor' contestant's abs have prompted many inquiries. When body fat levels drop too low, it endangers the reproductive system, calcium absorption and bone health. You don't just do sit-ups to look like this. He says there is a wide variety of exercises that people can do to get more defined abdominals. Still, it's partly genetics.
Some people just show better in that part of their body than others do.
When some men laugh, their abs look like an accordion or washboard. Experts worry that trying to get this super-lean may be especially unhealthy for teens who are vulnerable to body image problems and eating disorders. And they are also concerned that it will frustrate older people who tend to put on body fat around their middle as they age. Jordan has talked to models and others with really buff bodies, and many of them are spending several hours a day working out and concentrating on strict diets. Exercise physiologist Richard Cotton with the American Council on Exercise, a non-profit fitness certification organization, agrees.