The bedroom should not be too big, mainly for gathering yang. Traditional health care pays attention to closing doors and windows when sleeping. Don't turn on the electric fan and air conditioner to sleep in summer, no matter how hot it is. When people fall asleep, a protective layer of yang will be formed on the body surface. If the wind blows this yang away, it will be replenished in the body. Wash Yang repeatedly, get up bored in the morning, his face is yellow, and his head is wrapped in cloth. If it is too hot in summer, you can close the bedroom door and turn on the air conditioner to blow the room cool, so that people can go to bed soon after taking a shower. The cool wind can last more than 1 hour, and people have fallen asleep. If you wake up halfway, you can do it again.