It may be more difficult for thin people to gain muscle than for fat people.

Because fat people have a weight base, fat loss and muscle gain can be carried out at the same time. I feel that fat people are tired of losing weight, but it is not easy to make thin people fat. You can't deny that you can gain muscle, and a reasonable diet can be changed to five meals, because thin people don't have insufficient digestion, but their absorption ability is not very strong.