The metabolism of the body can be accelerated by increasing protein intake in moderation and exercising in moderation. Human metabolism is affected by a number of factors, including gender, age, endocrine status, and the amount of exercise can affect human metabolism. However, gender, age and other objective factors can not be changed, but only by changing the combination of food intake and increase the amount of exercise to change the metabolic rate. Food has its own unique thermodynamic characteristics, in general, the absorption of sugar needs 4% of its own energy, fat needs 6%, but protein needs up to 30% of energy to achieve its own digestion and absorption. Therefore, a moderate increase in protein intake can improve the thermodynamic state of food, thereby accelerating the metabolic rate. Exercise is also a very good way to speed up metabolism. In the process of exercise, the human body will consume calories, the fat into water and carbon dioxide exhaled out of the body, thus accelerating the metabolism. Aerobic exercise, in particular, not only improves metabolism, but also increases the strength of skeletal muscles and bones, exercises cardiorespiratory function, and promotes physical health. Therefore, scientific diet and moderate exercise can somehow improve metabolism and maintain the healthy state of human body.