Mike Mentzer a bodybuilding great from the mid 70’s to early 80’s popularised the ‘Heavy Duty Training System’. He had a monthly column in Muscle & Fitness whereby he would answer readers questions.
Source: Muscle & Fitness (Issue May 1982)
Mike Mentzer a bodybuilding great from the mid 70’s to early 80’s popularised the ‘Heavy Duty Training System’. He had a monthly column in Muscle & Fitness whereby he would answer readers questions.
Source: Muscle & Fitness (Issue May 1982)
