Mainly a good attitude and a good mood, Chinese medicine believes that man and nature are a whole. People must learn to adapt to the changes of the four seasons to keep fit, when to eat what, and don't eat out-of-season food. Also adapt to the change of time, sleep at dark, don't stay up late, get up at dawn. Traditional Chinese medicine in China believes that people with smooth qi and blood will be healthy, and they can practice yoga or Tai Chi, both of which are good exercises.