This statement needs to be changed ... I am heavy after fitness, but I am not fat. Fat refers to fat gain, and weight refers to muscle content increase. From this point of view, it is very normal to get heavier after fitness, which is the dream of every senior bodybuilder. I can probably understand why you say you are getting fat. There is a high probability that your fat content is high. And I haven't experienced systematic fat-reducing training. Therefore, after a period of fitness, your fat has not been effectively reduced. At the same time, after some strength training, muscles grow under the fat. This has caused the weight to get bigger and bigger and the visual effect to get fatter and fatter. So, if you want to change the status quo: please suspend strength training. Start systematic aerobic exercise to reduce fat. Fat reaches your satisfaction and strength training continues, which is the ultimate pursuit of fitness. Fortunately, your muscle content is not low now. They can effectively help you lose fat in aerobic exercise, so your fat-reducing efficiency is much higher than that of ordinary people!