Describe why physical activity is very important in a weight-loss program

Answer 1

The best approach to weight management includes physical activity. Either energy restriction or physical activity alone can produce some weight loss. Clearly, however, the combination is most effective. People who combine diet and physical activity are more likely to lose more fat, retain more muscle, and regain less weight than those who only diet. Even without weight loss, physical activity may also help counteract some of the negative effects of excess body weight on health. For example, physical activity reduces abdominal obesity, and this change improves blood pressure, insulin resistance, and fitness of the heart and lungs, even without weight loss. The goal is to expend as much energy as time allows; the greater the energy deficit created by physical activity, the greater the fat loss. A word of caution, however: people who reward themselves with high-kcalorie foods for "good behavior" can easily negate any kcalorie deficits incurred with physical activity.