Don't trust those people, that is, thin people can build muscles as long as they work hard! Moreover, the muscles developed by thin people are more beautiful, because there is no fat wrapped in the outer layer, which can show obvious muscle lines. As long as the food is normal, you don't have to eat big fish and big meat, because muscular development doesn't mean that your muscles have increased, but that your original muscles have become bigger. As long as you exercise regularly, you can thicken muscle fibers, so it looks like your muscles are getting bigger. The meat you eat is fat and useless. Not only ugly, but also inconvenient to move. At that time, if you want to lose weight, it's not necessary. It is a simple and practical method to practice upper body muscles to do high push-ups, that is, put your feet on an object higher than the ground and do it with your hands supported. The specific height depends on your physical fitness. The higher you step, the more difficult it is. You can usually make 30 sets. Do it in 4 groups and do it every day. If you keep practicing for 3 months, the muscles around the neck, back muscles and arms should start to change obviously, and the shoulders will look like an inverted triangle. Remember to do it the standard way. You would rather do it slowly or less than a few, and you can't be opportunistic. Sports can't be fake. If you count as a dragonfly, it's no use doing 100. In fact, the hardest thing is persistence. You must have the belief of sticking to the end in order to gradually achieve results. Come on! ||||| You have to gain weight first. How do thin people grow muscles? Eat more nutritious food with high protein content.