You must understand that the workout does not actually produce muscular growth. The workout is merely a trigger that sets the body's growth mechanism into motion. It is the body itself, of course, that produces growth; but it does so only during a sufficient rest period.
Mike MentzerThe theory of high-intensity, anaerobic, bodybuilding exercise is not true because I or anyone else, no matter how many might agree, say it is true. It is the fact that the logic of the theory is unassailable which makes it true.
Mike Mentzer