If you don't exercise for a long time, your muscles will indeed become inconspicuous and your fat will increase, but it is not that your muscles will become fat directly. Generally speaking, the muscles are not so easy to disappear. The main component of muscle is protein, and although protein can be used as a source of energy, under normal circumstances, it usually consumes sugar first, then fat, and then protein. Therefore, those who control their diet to the extreme or even hunger strike because of losing weight will do harm to their health.

The reason why the body still seems to have no muscles without the muscles getting smaller is that the fat on the body has increased and covered the muscles. People who want to keep fit and gain muscle generally need to do aerobic exercise to reduce fat, because strength training alone can't show muscle, and only reducing fat can get twice the result with half the effort.

Most people get fat because they eat well, but they don't exercise much. As a result, the human body can't consume the inedible sugar, and some of it will be converted into fat and accumulated in various places under the skin, which will lead to obesity. In fact, the three nutrients in the human body: sugar, protein and fat can be transformed into each other. Protein is a part of important tissues of human body, such as organs and muscles. Sugar is the most important and direct functional substance of human body. Fat is the substance that stores the most energy in human body.

In order to prevent muscles from getting fat, we don't want to go to the gym as tired as before, so we can make plans appropriately. Pay attention to how much food you eat a day. According to your own life experience, if you have more than usual, you should exercise properly, go for a walk or run, and do something that consumes energy in short. If you don't eat too much this day, you just need proper exercise.