Night running can lose weight, running when the body metabolism increases, can consume excess fat, usually adhere to more than 2 weeks can see the effect of weight loss. Night running can be adhered to in the case of good air, exercise time can be independently mastered, but each time need to reach more than half an hour, in order to have the effect of fitness and weight loss. Night running 40 minutes a day belongs to the more suitable time, and the intensity is more appropriate, can stretch the body’s muscles, so as to reduce the body fat content, generally adhere to more than 2 weeks to see the more obvious effect. Therefore, the effect of running to lose weight is related to the daily running time, persistence, intensity and so on. Although night running is good for health, but it is not recommended to run within one hour of dinner, so as not to increase the pressure on the gastrointestinal tract, as well as increase the burden on the heart. It is recommended that night running be carried out one hour after dinner, and it is forbidden to eat again after night running to avoid losing the weight loss effect, and also to pay attention to safety.