There is a Chinese proverb, spring sleepy autumn sleepy summer snooze. Spring people do tend to snooze, there are several reasons: one is the colder weather in winter, the body’s capillaries are in a state of contraction, so that heat is not lost too much, the relative blood flow to the outside is less. After the spring warm up, the blood vessels of the skin began to stretch, there will be a lot of blood flow to the limbs, this time the relative blood supply to the brain is reduced some, the relative to the lack of oxygen, lack of blood. Of course, this is not pathological, but only relatively less, resulting in a feeling of sleepiness; the second reason is because, in winter, the night is long and the day is short, and after spring the day is gradually short, but at this time the human body is not yet adapted, according to the words of the people is always in a state of sleep deprivation; in addition, the weather in spring gradually becomes warmer, the loss of sweat from the skin is also more, in addition to water and minerals, of which the mineral potassium controls People’s excitement nerves, potassium loss more people will be easy to sleepy. If you want to solve this problem. Drink a little refreshing tea, another, potassium, eat more food containing more potassium, one is the beans, one is the mushroom class, and nuts, these foods contain more potassium. For example, it is recommended to drink white lentil porridge in spring, white lentils benefit the qi and strengthen the spleen, and it contains relatively high potassium, which is good for improving the excitability of the body. White lentil porridge is better when cooked with japonica rice. Eat seasonal vegetables such as leeks and mustard greens, and eat onions, ginger and garlic in moderation. Moderate amount of fruit. Supplement vitamins. Properly increase the dietary protein content, develop good sleep habits, go to bed early and get up early, and take a lunch break for 20 to 30 minutes at noon. Outdoor trekking and jogging, head massage and diligent face washing are also good methods. Middle-aged and elderly people, especially those with cerebrovascular disease, have reduced blood flow to the brain due to reduced elasticity of the blood vessel walls, resulting in ischemia and hypoxia of the brain. Patients will make the pressure in the chest cavity drop by yawning, so that the blood and oxygen supply to brain cells can be improved. However, this improvement is temporary. For frequent yawning elderly people may indicate that ischemic stroke may occur, so pay attention to it and go to the hospital for examination in time!