晒太阳 ,自古以来被人们视作强身健体的手段。清代慈山居士写过一本《长寿秘诀》 ,其中说 :“清晨略进饮食后 ,如值日晴风空 ,就南窗下 ,背日而坐 ,《列子》所谓‘负日之暄’也。脊梁得有微暖 ,能遍体和畅。日为太阳之精 ,其光壮人阳气 ,极为补益。过午 ,阴气渐长 ,日光减缓 ,? The sun has been seen as a physical fitness tool since ancient times. In the Qing Dynasty CiShi layman wrote a “longevity tips”, which said: “After a little morning into the diet, such as the value of the sunny sky, south window, sitting on the back,” Liezi "so-called ’negative day Xuan’ Also, the backbone of the warm, can be all over and smooth day for the essence of the sun, its light Zhuang yang, very replenishing benefits. Afternoon, Yin Yin, sun, slow down?