I'm not good enough, I can only answer some answers I know, and others have friends to help you answer ~

(1)- Have you ever heard of "Life lies in sports"? This stems from metaphysics. Everything in the universe is moving. It will rot if it doesn't move. Look at the overall situation and look at our natural environment. You remember the geography class in junior high school and senior high school ~ ~ You should also have many pictures of natural phenomena ~ ~ ~

So the basic principle of physical exercise is to participate in the process of exercise ~

(2) According to China's ancient health preserving theory, we should pay attention to the harmony with the environment. There used to be many Taoist priests in China, as you know ~ ~ ~ They took a deep breath every day and practiced sword. You will find many things related to Wudang when you have the chance.

Therefore, the principle of physical exercise is to integrate yourself into the environment, not to transcend or be bound by the environment. Simply put, exercise, but don't overdo it ~

(3)- There are too many methods ~ ~, and all of them have specific exercise methods. You didn't mention anything in your question. It's hard to say what the method is ~ ~ I hope to add a question ~ ~