Aerobic breathing will certainly consume fat, which is good for many aspects of the body. How to gain weight? This depends on the individual's body absorption and so on. You can go to the hospital to check trace elements and see what the doctor suggests. I think the main way to gain weight is diet, how easy it is to gain weight by eating at night, and then pay attention to the law of life and so on. Having a good living habit will also help your body develop into a good state. Avoid overeating, it may be fat, but it is not good for the stomach and may lead to some diseases.