1, the biological clock has not been set. The biological clock of the brain measures time by feeling the temperature of light. Wake up at dawn and go to bed at dark, but the biological clock has not responded to the sudden change of the length of day and night in spring.

2. Brain nerve cells reduce excitability. Spring is warm, and the brain is less stimulated by cold and heat. In this environment, the excitability of brain nerve cells will be reduced, and people will easily fall asleep.

3. Insufficient oxygen supply to the brain. When the temperature rises in spring, the pores, sweat glands and blood vessels of the human body relax, the blood circulation of the skin increases, the blood flowing to the brain decreases relatively, and the oxygen supply to the brain decreases accordingly. Coupled with warmer weather, vigorous metabolism and increased oxygen consumption, it will aggravate the lack of oxygen supply to the brain. However, the brain tissue has become dependent on sufficient oxygen supply, so people tend to feel sleepy in spring.

1, early to bed and early to rise.

This is an old saying, but it really works. Don't try to disturb the biological clock that has evolved over billions of years. Go to bed before 10 in the evening and start at 5-7 in the morning.

2. Don't eat too much.

As mentioned earlier, if you eat too much, you will feel sleepy. After eating, appetite will drop, parasympathetic nerves will be excited, and it is easier to get sleepy.

3. Take a nap at noon.

Taking a break at noon 10-20 minutes can play a good role in physical and mental repair.

4. Get more sunshine.

Getting more sunshine during the day can help your biological clock adapt to the seasonal changes more quickly.

5. Exercise properly.

It can improve blood circulation and exercise the oxygen supply ability of the brain.

6. Soak your feet before going to bed.

This method is very useful, besides improving sleep, it can also promote blood circulation and enhance the body's immunity.

Diet, do not advocate "tonic", eat more light and mild, not spicy and greasy, high in plant protein, rich in vitamins, such as bamboo shoots, spinach, bitter gourd, yam, lotus seeds, tremella and so on.

In terms of wearing, we should pay attention to cold and warmth. Although the weather is healthy and warm, the temperature difference between day and night is large, and it is easy to "chill in spring", especially on rainy days. Exposed limbs can easily cause local numbness, soreness and other symptoms, which will lead to arthritis over time.