Great thread guys..I recently had this question popped in my head too. Dr. McClain breaks it down [ame="https://www.youtube.com/watch?v=7KQlq9bGO04"]https://www.youtube.com/watch?v=7KQlq9bGO04[/ame] and very nicely articulated IMO not just GH but comparing with muscle hypertrophy as well. Slide to 33:15 mintue mark to hear about this..