Isnt this just a case of the fact that most guys start lifting in their early 20's, get 6-8 years of good natural growth then reach their genetic limits?I would expect most guys in their late 20's or early 30's who have never trained to be able to put on some good mass in the first 3 years, wouldnt you?How much does test production actually drop?Is this drop enough to produce a complete stop on growth in some?If it is a myth at what age would you NOTICEABLEY put on less muscle as a beginner?This is all assuming a natural trainee.thoughts please.