So what is the secret of Huatuo's health care? Huatuo attaches great importance to sports and labor training. He said: "The human body has to work, but it should not be extreme." If you waver, you will be cut off. Blood circulation, disease can not be born. For example, it is also immortal. "This means that people need to participate in sports (or labor) often, but they should avoid being too tired. Regular exercise can speed up food digestion and make blood circulation unimpeded, so that you won't get sick. Like a door shaft. If used frequently, it will not be stiff and ineffective. There is a story about the "Five Birds Play": It is said that Hua Tuo went to Gongyishan to collect herbs when he was young. When he climbed halfway up the mountain, he found a cave. He is curious and wants to go in and have a look. Suddenly I heard someone talking about medical ethics inside, so I stood outside the hole and listened. He listened intently. He heard the two men talking about Hua Tuo, which frightened him. He was about to turn and run away when suddenly he heard a man shout, "Since Watson has come, why not go in and have a chat!" " Hua tuo had to bite the bullet and walk in. It turned out to be two immortals with white hair and beard. They taught Hua Tuo many wonderful medical skills, and also taught him a set of fitness techniques: imitating the postures of tigers, deer, bears, apes and cranes to exercise, which is the famous "Five Birds Play". After Hua Tuo went down the mountain, he followed the instructions, which not only cured many patients, but also improved his health.