Share: Title:MIKE MENTZER: STARTING YOUR HEAVY DUTY TRAINING PROGRAM #mikementzer #fitness #motivation Duration: 11:47 Plays: 393K views Published: 1 year ago Download MP3 Download MP4 Simillar Videos ▶️ 7:26 Heavy Duty Questions And Answers #mikementzer #gym #motivation #bodybuilding #training 393K views • 9 months ago ▶️ 16:09 Mike Mentzer: Advanced Heavy Duty Training Methods 393K views • 2 years ago ▶️ 55:10 Mike Mentzer: The Complete Heavy Duty Training System #mikementzer #gym #motivation #training 393K views • 5 months ago ▶️ 14:32 Mike Mentzer: How To Build Maximum Muscle Mass #mikementzer #gym #motivation #bodybuilding 393K views • 3 months ago ▶️ 11:48 Mike Mentzer: Heavy Duty Chest And Back Workout #mikementzer #gym #motivation #bodybuilding 393K views • 1 month ago