Mathematical model predicts weight with varying diet, exercise changes; Findings challenge one-size-fits-all weight assumptions

Mathematical model predicts weight with varying diet, exercise changes; Findings challenge one-size-fits-all weight assumptions: Researchers have created a mathematical model -- and an accompanying online weight simulation tool -- of what happens when people of varying weights, diets and exercise habits try to change their weight. The findings challenge the commonly held belief that eating 3,500 fewer calories -- or burning them off exercising -- will always result in a pound of weight loss.