Sleeping time is a Taoist method. You fall asleep in the middle of the night and get up in the middle of the night. Control yourself from sleeping at 5: 30 in the morning, or you will be tired and listless all day. However, the body is equally important, and it should be supplemented by food. But if the food is too greasy and the digestion is abnormal, the brain will generally lack oxygen, which is also the reason why people feel sleepy after eating. This is a normal phenomenon, so simply change the diet structure, but give the body enough nutrition and eat more protein. VB can help metabolize and absorb protein, and it is not easy to get sleepy. Don't supplement calcium indiscriminately during this period. Calcium helps to nourish nerves and promote sleep. If you don't have enough sleep time and want to stay awake, you can try this method.