Legal analysis: Generally speaking, you can return your fitness card after you finish it, but it depends on which gym it is. They will encourage you to continue exercising, so you'd better not quit. As long as you insist, they will give it back to you.

Legal basis: People's Republic of China (PRC) Consumer Protection Law.

Article 1 This Law is formulated for the purpose of protecting the legitimate rights and interests of consumers, maintaining social and economic order and promoting the healthy development of the socialist market economy.

Article 2 The rights and interests of consumers in purchasing and using commodities or receiving services for their daily consumption needs are protected by this Law. Matters not specified in this Law shall be protected by other relevant laws and regulations.

Article 3 Business operators shall abide by this Law when providing consumers with the goods or services they produce and sell. Where there are no provisions in this law, other relevant laws and regulations shall be observed.

Article 4 When conducting transactions with consumers, business operators shall follow the principles of voluntariness, equality, fairness, honesty and credibility.