The best time for sunbathing is 6: 00 am 6:00- 10/0 and 4: 00 pm, and the daily duration is about 15 minutes. During these two periods, the sunshine is warm, but not strong, and the amount of pollution in the air is also the lowest. Might as well find an opportunity to walk out of the room and in the sun, so that the energy of the body is gradually activated and the sweat is stimulated to "walk out" of the body. After a walk, my body is very smooth.