A good coach will be responsible first, and will take the initiative to find you after collecting money, instead of disappearing after collecting money.
There is also professional knowledge, which should be able to guide you, and the method should be new. I can't just let you run, and you're exhausted. That's not fitness, it's walking monkeys!
And diet, he will give you dietary advice and will always supervise you ~
This is a good personal education.
Finally, it depends on the effect!