Sleep and wakefulness are physiological processes that are essential for maintaining the health of the body and the normal function of the central nervous system, and are normal rhythmic phenomena that are common in humans. Long-term poor sleep will seriously affect the health, but some food to help the role of sleep. 1, warm milk: milk has a tryptophan, a study has shown that has a calming effect, while milk is rich in calcium, can make people feel tired. Drinking a glass of warm milk before going to bed helps improve the quality of sleep, but be careful not to be too full or too hungry. 2, cinnamon: cinnamon is warm and sweet, it has the effect of nourishing the brain and strengthening the stomach and spleen. It is both food and Chinese medicine. Cinnamon is rich in a variety of vitamins and rich in glucose, has a high nutritional value, taken in moderation can not only replenish the blood, there is a calming effect of sleep, but high in sugar, do not eat a lot. 3, whole wheat food: whole wheat food is rich in vitamins, minerals and fiber, not only has a high nutritional value, but also can provide energy for the body, and the role of sleep. 4, sunflower seeds: sunflower seeds are rich in vitamins and a variety of amino acids, but also to improve the inhibitory function of brain cells, so you can calm and tranquilize. It is important to note that certain foods can promote human sleep, but never in moderation. Poor sleep is the end result of many complex factors, and reliance on food alone may have little effect, and behavioral and pharmacological treatments are needed if symptoms persist.