In fact, fitness can be said to be exercise, that is to say, sports activities that can exercise can be called fitness, and the sports activities that you participate in to lose weight are actually for exercise, so they should also belong to fitness, which can be understood as achieving the purpose of losing weight through exercise or fitness. The plastic surgery you mentioned belongs to bodybuilding.

What the landlord means is whether you can lose weight by using equipment and anaerobic exercise. In fact, as long as your training intensity is strong enough, the system is ok, and the speed is relatively slow compared with aerobic exercise. If you are an obese person, I suggest you combine aerobic and equipment training.