Share: Title:Mike Mentzer's Heavy Duty Training Rare Footage Duration: 26:41 Plays: 475K views Published: 3 years ago Download MP3 Download MP4 Simillar Videos ▶️ 11:24 Mike Mentzer: Heavy Duty Arm Routine #mikementzer #gym #motivation #bodybuilding #training 475K views • 1 day ago ▶️ 1:09:17 Mike Mentzer: Original Hit Workout Video #mikementzer #gym #motivation #bodybuilding 475K views • 2 months ago ▶️ 4:45 Mike Mentzer: How Do You Know When You Should Train Again? #mikementzer #gym #motivation 475K views • 3 months ago ▶️ 17:27 The Smartest Way To Build Muscle?! (mike Mentzer's 4-day Split Routine) 475K views • 10 months ago