There are monthly cards, season cards and year cards, so the fees are different because of different fitness time. You should go to a specific place for consultation. Generally, the cheapest price is 200 to 300 yuan. The longer the time, the more natural money, and the different levels and permissions of the card, the different natural prices, ranging from hundreds to thousands. Moderate fitness should have no effect on the body. You are still young, so you should take more exercise. Moreover, boys look healthier with long muscles. I suggest you go to the gym for consultation.