1. Bananas. Banana contains vitamin B6 which can keep people away from melancholy and 5-hydroxytryptamine which can make people happy, which can effectively keep people away from melancholy symptoms and promote sleep.

2. Milk. Milk is not only nutritious, but also has the function of inhibiting brain excitement, which can make people fall asleep easily. So, when you can't sleep, just have a glass of milk.

3. Sugar water. If you are upset and can't sleep peacefully, you can pour yourself a cup of cold sugar water before going to bed. Sugar water will produce a lot of serotonin, which will make your mind fall asleep easily after being suppressed.

4. Walnuts. Phospholipids in walnuts have good health care effects on brain nerves. Walnut oil contains unsaturated fatty acids, which has the effect of preventing and treating arteriosclerosis. Walnut kernel contains zinc, manganese, chromium and other indispensable trace elements. Walnut is often used to treat neurasthenia, insomnia, forgetfulness, dreaminess and other symptoms.

5. Whole wheat bread. Whole wheat bread is no stranger to some people who pay attention to healthy eating. It is an ideal diet food. Can provide rich crude fiber and carbohydrates to the human body. A slice of whole wheat toast, with tea and honey, can help the human body release an insulin, which enables tryptophan to reach the human brain and be converted into serotonin there. It's like someone whispering in their ear, "It's time for bed.