This still depends on the personal quality of the fitness instructor and the needs of the subjects. If the coach is in good shape, at least it means that the coach loves fitness and can buy lessons. He can let you learn some knowledge. However, if the coach is not tall enough, it is still not recommended for the subjects to buy classes, and it is difficult to guarantee their health. Customers can imagine that even if there are many theories, they can't explain anything, so it depends on personal needs. There are also Daniel in the gym, and you can also consult.