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春困其实是人体生理对季节变换产生的正常反应。寒冷的冬天,人体受到低温的影响,皮肤的毛细血管收缩,血液流量相对减少,汗腺和毛孔也随之闭合,减少热量的散发,以维持人体正常体温。到了春天,随着气温回升,人体的毛孔、汗腺、血管等开始舒张,皮肤血液循环加快。这样一来,供给大脑的血液就会相对减少。天气变暖后新陈代谢逐渐旺盛,耗氧量不断加大,大脑的供氧量相对不足。
Spring storm is actually the normal physiological response to seasonal changes. Cold winter, the body affected by low temperature, the skin capillary contraction, the relative reduction of blood flow, sweat glands and pores will also be closed, reducing the heat emitted to maintain the body’s normal body temperature. In the spring, with the temperature rise, the body’s pores, sweat glands, blood vessels began to relax, skin blood circulation to speed up. As a result, the blood supply to the brain will be relatively reduced. Metabolism gradually warming after the weather is warming, oxygen consumption continues to increase, the brain’s oxygen supply is relatively inadequate.