How long after the exercise weight began to decline with the individual’s physical condition and the severity of obesity, can not be generalized. The main energy source of human exercise comes from sugar and fat, and exercise can improve lipid metabolism and increase the metabolic rate, obese people with appropriate intensity of exercise training, appetite can be reduced, thereby limiting the intake of calories, so that the body’s energy metabolism appears negative balance, to achieve the role of body fat reduction. In general, the fat people, exercise about 1 week, weight loss is more obvious. For muscle-type obese patients, the weight loss after exercise is not obvious or more slowly, and some patients can 1-3 months before the weight loss. Such obese people first of all diet should be light, eat more fruits and vegetables, weight loss should not be too hasty, pay attention to the exercise intensity appropriate, otherwise easy to make the atrophied muscle developed again. It is suggested that obese patients should avoid high energy food, pay attention to exercise and avoid staying up late to avoid endocrine disorders.