Once you stop exercising, your muscles will not automatically turn into fat
Especially for beginners and the “normal population” the common misconception stubbornly persists that with the end of a lifters bodybuilding career, the muscles start to turn into fat. Anyone who has raised this claim at some point, probably believes in Santa Clause as well.
Once you stop exercising, the corresponding training and growth stimulus for the muscles is missing. The body reacts by starting to break down muscles. However, the greater the loss of muscle, the greater the likelihood that the skin will take a little longer to adapt to the reduced sizes. However, this is regulated fairly decent by the body over time (depending on genetics).
If an athlete becomes fat after the end of his training time, it has a completely different cause: he still eats as he did when he was doing sports. Only, due to the lower activity, the calorie exemption is lower. Of course, the energy supply should be adapted to this. If this does not happen, the body stores the excess calories as fat.
Of course, you should never abruptly stop training, if you have previously trained performance-oriented. Rather, the reason for this is that the entire organism with its cardiovascular system is accustomed to the physical stress that comes with working out.
Drastic and fast changes to the body’s weight and body composition (the distribution of muscle mass, fat, bone mass, etc.) almost always leads to more stress on the body’s cardiovascular system. If the training component suddenly disappears, the body may have problems with the cardiovascular system. Therefore, one should slowly decrease the amount of training towards the end of his career.