mTOR or the human tested, clinically proven trademark, “MEDIATOR” has been shown to be a key regulator for muscle mass in the human body. In Layman's terms, the best way to describe the process is to think of your dream physique as a house you are trying to build. You will need all your materials: lumber, concrete, electrical, plumbing, etc. You will need the knowledge, but all the knowledge and limitless materials are nothing without a skilled labor force.