Generally, the in-house gym will be cheaper. Sticking to fitness is still effective. It is best to have a professional fitness coach to guide you about fitness. It would be more reliable to go to the gym. The salary of private education includes: basic salary+sales commission+class commission (course unit price * class hours * class commission)+bonus+insurance. Objectively speaking, private education is an industry that attaches great importance to ability, and the difference between professional ability and sales ability also leads to a large income gap.