Breakfast is a very important nutritional food for the day, it is recommended that the time of breakfast at 7:00-8:00, because this time the body has awakened, ready to start a morning of intense work, at this time the body function began to recover, body temperature rose, pulse accelerated and sympathetic nerve activity, the digestive system also began to work normally, digestive enzyme secretion also reached a peak, the gastrointestinal tract is also in a state of awakening. Therefore, at this time to eat breakfast on the one hand can be efficient digestion, absorption of nutrients in food, on the other hand, after eating breakfast at this time can ensure that after 8:00 for normal work, to provide a morning of intense work necessary nutrition and heat, so breakfast at 7:00-8:00 between eating for the best time.