Why are people more grumpy in spring?

In spring, people often feel sleepy and listless. This is the so-called "spring sleep". Spring sleepiness is a natural response of human body to seasonal changes, and there are many reasons. The temperature is moderate in spring, 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. In winter, the temperature is low. In order to reduce the heat emission, the capillaries on the skin surface contract, and the blood circulation of the skin is weakened, while the blood flow of viscera and brain increases, and the oxygen supply of the brain also increases. Therefore, people will feel clear-headed in winter. In spring, the temperature rises, the blood vessels and pores of the skin 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. However, the brain tissue has become dependent on sufficient oxygen supply, so people tend to feel sleepy in spring. At the same time, the increase of human metabolism and oxygen consumption in spring will also aggravate the lack of oxygen supply to the brain. However, in fact, spring sleepiness can be overcome. Here are some tips to overcome it: First, go to bed early and get up early, keep a good mental state, take an active part in sports activities, improve the systolic function of the heart and improve the blood circulation of the whole body through physical exercise. Second, pay attention to indoor ventilation and breathe fresh air outside. Third, adjust the diet: the diet should be light and eat less greasy dishes. asgdva