The best time for breakfast is 7 o'clock. In the morning, the sun rises slowly and the body gradually wakes up. By about 7 o'clock in the morning, the gastrointestinal tract has fully awakened and the digestive system has begun to operate. At this time, eating breakfast can effectively digest and absorb food nutrition. Full marks breakfast should include at least three kinds of food: cereal, such as noodles; Animal food, such as meat, eggs and dairy products. There are also vegetables and fruits rich in vitamin C, which can supplement dietary fiber. It would be more perfect if one or two nuts were added.