
"When you observe somebody who doesn't seem to gain weight, they're not defying the laws of thermodynamics, the laws of physics," says U.S. News Best Diets expert panelist Dr. Larry Cheskin, the director of the Johns Hopkins Weight Management Center. What they're doing, in some fashion, is balancing their intake and output, he adds.This phenomenon is very common in young children, Cheskin says. For example, if kids choose to go run around the block, they'll likely come back and eat more than they normally would. But then they won't repeat those same eating habits for the rest of the week. CLICK HERE TO READ ARTICLE!