有关“自然醒”的科学解释光线是体内生物钟的闹钟,当早上人体生物钟感受到了太阳光线后,体内的褪黑素分泌减少,血清素分泌增加,新陈代谢加快,身体各部分就逐渐从熟睡过渡到浅睡,直到醒来。夏季睡眠时间比秋冬季平均要短1～2小时。夏季太阳升得早,人体受到光线照射后,早早地自然醒来令人舒服。而秋冬和初春时, About the “natural wake up” scientific explanation of the light is the body clock alarm clock, when morning human body circadian clock feel the sun’s rays, the body reduces the secretion of melatonin, increased serotonin secretion, metabolism, all parts of the body gradually from sleeping Transition to light sleep until wake up. Summer sleep time than the average autumn and winter short 1 to 2 hours. As the sun rises early in summer, the body wake up spontaneously early after being exposed to light. The autumn and winter and early spring,