If you just do aerobic exercise without a clear goal, the coach will not help much.

If you really want to keep fit, gain muscle and improve your figure, you have to do equipment (anaerobic). At this time, you definitely need the guidance of a coach, but you don't have to ask a private tutor.

Generally speaking, there are two situations, either when you apply for a card, he will give you two private lessons, one of which will talk about basic operational knowledge; Either he has a travel coach, you can ask him simple questions.

It is certainly beneficial and even necessary to invite a coach. It's not that you can't practice without a coach. You should be good at learning and you will make progress. Everyone advocates finding a partner during training. Besides help and protection, there are other purposes, I think you should understand.