eric broser Oct 31In this episode of Built by Broser, we catch up with Coach Merlin and his new celebrity protege, James Rogers. In this particular training program, we exhaust the slow twitch muscle fibres in the beginning, and THEN the fast twitch ones for growth. The boys hit a full back workout FTX2 style! If you haven’t tried this style of training yet, just watch the video, and get inspired!