If your sebum is thick, I estimate that your muscles will increase in a month, but it won't be obvious because your sebum is too thick. If you are a skinny person with thin sebum, I believe that if a professional coach takes you to exercise, there will be a significant increase, because a professional coach will provide you with professional knowledge and experience, which is much faster, more efficient and safer than groping slowly without knowledge, and reduce the occurrence of injuries.