If you want to go to the gym, if you are new, please ask a fitness instructor for guidance. Because I have never been exposed to fitness, many actions and equipment are not in place or will not be used correctly. In the long run, it is easy to deform the bones and damage the body. So you must ask a fitness instructor to give you correct guidance and make a careful fitness plan for you, so that you can get twice the result with half the effort. However, if you have a certain fitness foundation, you can check some fitness materials and fitness plans directly on the Internet without asking a fitness instructor, and exercise according to the plan, so that you can gain muscle and lose weight.