The simplest thing is to look at the qualification certificate. There is too much water in China. I don't usually believe it. Mainly depends on whether there are certificates from several sports associations in the United States or internationally accepted private education certificates. . .

The more troublesome thing is to see how to teach, which requires some fitness knowledge. Many private tutors actually don't even know some very basic knowledge or think they know but are wrong, which has been confirmed by many friends. Some people may talk nonsense because they want to sell supplements, while others don't know anything about fitness at all.