This paper discusses how to understand the relationship between exercise, nutrition and health.

Exercise can consume excess calories and fat, promote the metabolism and blood circulation of various systems of the body, and enhance the body's resistance. Insufficient exercise will lead to physical decline and obesity, but excessive exercise may also cause excessive calorie consumption and physical function damage.

Nutrition is a necessary material condition for the human body to maintain life and exercise. Reasonable intake of nutrition can maintain the metabolism and blood circulation of various systems of the body and enhance the body's resistance. Insufficient nutrition intake will lead to malnutrition and various diseases, but excessive nutrition intake will also cause calorie accumulation, obesity and increase the burden on the digestive system.

Health is the balance between exercise and nutrition. Exercise and nutrition are indispensable. Lack of exercise, excessive exercise, lack of nutrition and overnutrition are all harmful to health.