Yes, fitness muscles will grow. When you stop exercising, your muscles will gradually turn into fat, and you can bid farewell to your skinny life. I suggest you buy a dumbbell yourself and don't go to the gym to spend a lot of money. The coach just teaches you fitness movements and sells nutrients to earn your money. (Fitness exercises can be searched online, and my personal suggestion is potatoes. Com search: Xiong Man teaches you dumbbell fitness 1 ~ 10. A thin camel is bigger than a horse. Even if you are the thinnest in the whole gym, no one in the street is stronger than you when you go to the street with bare arms. Unless he is also engaged in fitness, the one who plays basketball every day is at most rough. Compared with our health, he is fat. Do you want to be a gladiator? Girls nowadays don't like muscular people. A small muscular man with a good figure like Edison Chen. Stick to the secret of fitness. When you are too tired to give up every day, touch your muscles, and you will find that they are bigger and stronger than before, so you will be addicted to muscles. Pick up the dumbbell and start practicing. In the future, when you go shopping with bare arms, or when you are with your girlfriend XXX ... show off more, ha! )