The cost of gym exercise can be divided into the following items. The first is the membership card fee, which is your fitness certificate. You must apply before you exercise. Generally, the annual card fee ranges from 800 yuan to 2000 yuan, depending on the size of the gym. The second is the cost of hiring a fitness instructor. A fitness instructor can make a professional fitness plan for you, and give professional guidance during your fitness process, which can make you get twice the result with half the effort. The tuition fee is about 200~500 yuan per class. The third part is the cost of various supplements needed for fitness, such as whey protein powder, base chain and other nutrients. This part of the cost varies from person to person. If you are new to fitness, you don't need to take nutrition, but if you want to seek a breakthrough, you must supplement enough whey protein. The cost of this part is about 800 yuan per month.