In addition to buying an annual card, the old bird in the gym blocks all other consumption and buys a protein powder at most. Bring your own water, powder, no special locker, no partner coach, and newcomers exercise for free. Hey hey.
Gym means that women earn more than men (as long as there are a few handsome and stylish female members), novices earn more than old birds, young men earn more than old men, and fat people earn more than thin people. Something like that If you come to a girl who is not very beautiful, she always takes selfies crazily and looks very professional. If you teach a man privately, you don't have to worry about class.