In addition to confidence, the key is to understand the key to health. I think the essential health care is to protect the energy balance of the human body, that is, not to consume too much body energy. So from this point of view, first, don't be overworked, second, have good work and rest habits, and third, pay attention and don't be distracted. In other words, to do what you should do, don't think blindly, it is very energy-consuming.