有的老年人因天冷怕寒,睡觉时总爱多穿些衣服,其实这样做很不利于健康。因为在睡眠时,一方面人的中枢神经系统活动减慢,大脑、肌肉进入休息状态,心脏跳动次数减少,肌肉的翻身运动和紧张度减弱。此时脱衣而眠,可很快消除疲劳,使身体的各器官得到很好的休息。另一方面,由于人体皮 Some elderly people are always afraid of cold because of cold weather. When they sleep, they always love to wear more clothes. In fact, this is not conducive to health. Because during sleep, on the one hand slow down the central nervous system activity, brain, muscle into a state of rest, reduce the frequency of heart beating, muscle turning movements and tension weakened. At this time strip and sleep, can quickly eliminate fatigue, so that the body’s organs get a good rest. On the other hand, due to human skin