Fitness emphasizes the exercise of all parts of the body, which can strengthen muscles and bones, relax muscles and tendons, and play a role in health care, cure diseases and prolong life. And keeping in good health emphasizes both external physical exercise and internal exercise, that is, "
The cultivation of spirit. The so-called "nourishing qi", "nourishing spirit" and "nourishing essence" are the image annotations to the theory of health preservation. As far as the human body is concerned, the most precious thing in life is "essence, qi and spirit". Physical strength, health and longevity depend on the state of "essence, qi and spirit", so Chinese medicine calls it the "three treasures" of life. Fitness is to consume some extra calories through exercise and make the body strong. However, when a person's exercise consumption is not compensated in time, fatigue is not recovered, and physical overdraft causes loss, that is, "vigor" consumes too much, and he will get sick over time. On the other hand, health preservation can increase the maintenance of "essence, qi and spirit". Pay less than output, open source and reduce expenditure, which is beneficial to physical and mental health.