凌晨一时,多数人已睡了三小时,进入浅睡眠阶段,此时,对痛特别敏感。二时,除肝外,体内大部分器官工作节律极慢,肝利用这段安静的时间加紧把一些有毒物质排除体外。三时,全身休息,肌肉完全放松,这时的人体血压低,脉搏和呼吸次数少。四时,血压更 At 1 am, most people have slept for three hours and entered a light sleep stage. At this moment, they are particularly sensitive to pain. Second, in addition to the liver, the rhythm of most parts of the body working extremely slow, liver use this quiet time to step up to exclude some of the toxic substances in vitro. At three o’clock, the rest of the body, muscles completely relaxed, when the body’s blood pressure is low, pulse and breathing less. Four o’clock, blood pressure is more