It depends on what you do. If you are a coach, you must have a national qualification certificate, know the maintenance and repair of equipment, and know the function of each equipment. You must give members a physical examination, prescribe exercise and spin your bike at the meeting. Every fitness club has different requirements, including professional coaches and touring coaches. If it's just a hobby, I think we can start with a member consultant. This requirement is relatively low, which is equivalent to sales. If you do it well, the salary is still good.