Don't listen to them. Eat more and gain weight before exercise. Eating too much and not exercising is fat. Even more ridiculous, some people say that fat and muscle can be transformed into each other. Don't talk nonsense Fat is formed by eating too many calories. Fat can only be consumed through exercise and diet control, and it is impossible to turn fat into muscle.

If you want to gain weight, do more anaerobic weight-bearing equipment training. Dumbbell barbells are the best exercise equipment. If you are a person with rapid metabolism, you can gain weight by supplementing muscle powder and systematic training. As long as you have perseverance and confidence, you can definitely become muscular. I can't write you a specific training plan. It won't be of much use to install other people's training plans for you, which varies from person to person.