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春困秋乏夏打盹,春困是怎么回事儿呢?漫长的冬季里,寒冷使毛细血管处于“收敛”状态,内脏器官的血流量增大,大脑的血液供应也相对增加,逐渐养成了高氧情况下工作的“娇气”习惯。春天由于天气转暖使人的皮肤血管和毛孔渐渐扩张,皮肤的血流量大大增加,供给大脑的血量相对减少,所以人们就会因脑组织的自我抑制
In the long winter, the cold causes the capillaries to be in a state of “convergence”, blood flow to the internal organs increases, and the blood supply to the brain also relatively increases, and gradually develops The work of high oxygen conditions “fragile ” habit. In spring, the blood and pores of human skin gradually expand due to the warming of the weather. The blood flow of the skin is greatly increased, and the amount of blood supplied to the brain is relatively reduced, so people will suffer from self-inhibition of brain tissue