In summer, people should not be afraid of the heat and the sun, because they should be scattered outside in summer and fully accept the sunshine and sweat. Now everyone uses air conditioning, and the indoor temperature is lower than that outside. Because the pores of the human body have self-protection function, once they enter the air-conditioned room, the pores will be closed to prevent cold air from invading the body too much. When we go outside from the air-conditioned room, it is very hot outside, and our pores suddenly open again, so that the pores in and out are always opened and closed for a while, disrupting the qi of yin and yang in the human body. Different climates in four seasons are actually good exercise for human skin, but blowing air conditioners is easy to make people sick. When it's time to sweat in summer, you have to sweat. All the year round, you are counting on drainage in summer, and all human garbage should be discharged in summer. If you don't sweat, you will get sick gradually, causing deep illness. If you don't take good care of yourself in summer, you will get very little for autumn, just like harvesting crops, and you will get very little. When it is harvested in winter, there is nothing to hide. There's nothing to hide, which means you're going to be seriously ill. ? Winter? Also refers to the elderly. If you don't take good care of your health in the middle and young age, you will get nothing when you are old, and you will age very quickly. Youth and maturity are equivalent to summer. In summer, what should be scattered will be scattered. We are also dispersing the energy in the body at this stage, but we can't disperse too much. If we take good care of it in youth and middle age, we will be healthy in autumn and winter, that is, in old age.