Mentzer started bodybuilding when he was 11 years old at a body weight of 95lb (43kg) after seeing the men on the covers of several muscle magazines. His father had bought him a set of weights and an instruction booklet. The booklet suggested that he train no more than three days a week, so Mike did just that. He attended the first Mr. Olympia and later said: “The 1965 Mr. Olympia contest was almost a religious experience for me." [10] By age 15, his body weight had reached 165lb (75kg), at which Mike could bench press 370lb (170kg) [ citation needed]. Mike's goal at the time was to look like his bodybuilding hero, Bill Pearl. After graduating high school, Mentzer served four years in the United States Air Force. It was during this time he started working out over three hours a day, six days a week. [6] It was the essential basic Heavy Duty routine consisting of four to five sets per bodypart and broken into two workouts.

Mike Mentzer (November 15, 1951–June 10, 2001) was an American IFBB professional bodybuilder, businessman and author. [6] [2] The 1980 Mr. Olympia contest staged in Sydney, Australia, remains by far the most controversial in the event’s history. The contention centered on the participation of Arnold Schwarzenegger, who had announced his retirement from competition in 1975 after winning six consecutive Mr. Olympia titles. Seemingly only in Sydney to do commentary for CBS TV, Arnold stunned the bodybuilding world by, on the morning of the contest, declaring that he was returning to competition in pursuit of a seventh title. This set off a chain of events that culminated in Mike Mentzer and Arnold seemingly set to resort to fisticuffs as illustrated by the attached photo which has become somewhat iconic.I once asked Mike what his arms had taped at their largest, and his answer startled me: “About 18 1/2 inches.” I was incredulous. “But they look well over 20 inches!” I exclaimed. “Pumped, they probably are, John,” he replied, “but measured cold, which is how you should measure your arms, they never stretched the tape beyond 18 1/2.” Mike Mentzer was famous for its Heavy Duty training philosophy, claiming that “Other contenders are overtrained, and aren’t lifting serious weights at all.” Mike was incredibly muscular in his bodybuilding career, claiming that results came from his program that focused on heavy duty training and small amount of repetitions, longer rest periods, and massive weights. His critical thinking and the way of training produced a lot of attention in the media as he was antagonistic towards the fitness theories and training regimes that were popular at the time. Mentzer retired from competitive bodybuilding after the 1980 Mr. Olympia at the age of 29. He maintained that the contest results were predetermined in favor of Schwarzenegger, and held this opinion throughout his life. While Mentzer never claimed he should have won, he maintained that Schwarzenegger should not have. Nevertheless, the two eventually had an amicable relationship. [11] [6] Legacy [ edit ] I was training on that kind of routine; that is, the full-body, three-days-a-week routine performed on Monday, Wednesday and Friday, when I was at college,” he related. “And while keeping up that kind of training in addition to a full college schedule, a part-time job with a physician and the demands of an ongoing relationship with a nice young lady, I found that I just didn’t have the energy. That three-days-a-week program left me so exhausted that when I did another full-body program on Monday, I was so shot afterward that all I could do was go home and sleep for a while.”

According to David M. Sears, a friend of Mentzer and an editor and publisher of his Muscles in Minutes book, he stated that: [6] For some reason, that question pissed him off. He seemed like a guy out of control as he turned to face me, his upper lip curled around like a snarling animal. We were debating the issue of weight classes, but Arnold chose to snap at me, ‘Mike Mentzer, we all know Zane beat you last year because you have a big stomach!’ Mike and I talked about a great many subjects during that trip, but first and foremost on my mind was finding out what Mike Mentzer’s most productive training routine had been. I knew that he’d been all over the board in terms of sets and reps throughout his early career, starting out with a whole-body workout performed three days per week, on which he gained no less than 70 pounds over three years, bringing his bodyweight up from 95 pounds at age 12 to 165 pounds at 15. From there Mike moved on to the routines advocated in the various muscle magazines that espoused 20-sets-per-bodypart training, even at one time extending that to 40 sets per bodypart. That brought his bodyweight up again, but only slightly. Jones pioneered the principles of high-intensity training in the late 1960s. He emphasized the need to maintain perfectly strict form, move the weights in a slow and controlled manner, work the muscles to complete failure (positive and negative), and avoid overtraining. Casey Viator saw fantastic results training under the direction of Jones, and Mentzer became very interested in this training philosophy. [16] Eventually, however, Mentzer concluded that even Jones was not completely applying his own principles, so Mentzer began investigating a more full application of them. He began training clients in a near-experimental manner, evaluating the perfect number of repetitions, exercises, and days of rest to achieve maximum benefits. [13]Mentzer followed the bodybuilding concepts developed by Arthur Jones and endeavored to perfect them. Through years of study, observation, knowledge of stress physiology, the most up-to-date scientific information available, and careful use of his reasoning abilities, Mentzer devised and successfully implemented his own theory of bodybuilding. Mentzer's theories are intended to help a drug-free person achieve his or her full genetic potential within the shortest amount of time. [13] The radical approach was criticized at first, but later on, open-minded people started using the method, and the results in muscle growth were incredible. Mike’s obsession was not to be defined or strong; Mike aimed to gain as much muscle as genetically possible. He was one of the most controversial bodybuilders at the time and a creator of an incredible physique. Mike Mentzer changed the course of history and professional bodybuilding. 10 Inspirational Mike Mentzer Quotes: 1. “Any exercise carried on beyond the least amount required to stimulate an optimal increase is not merely a waste of effort, it is actually highly counterproductive.”– Mike Mentzer Quotes I found that when I split the routine, doing half the body one day, the fatigue was even less than half, it was much less than half. You would think it would only be half, but apparently, after a certain point, in terms of volume of training, the exhaustive effects grow geometrically as opposed to arithmetically. I found that I could get the same benefits from the high-intensity training while avoiding the overwhelming exhaustive effects of the three-days-a-week routine.” While in school, Mentzer's father motivated his academic performance by providing him with various kinds of inducements, from a baseball glove to hard cash. Years later, Mike said that his father "unwittingly ... was inculcating in me an appreciation of capitalism." [6] I wasn’t interested so much in his theories (they were not as advanced as they would become from 1993 on, when he reduced the sets to one on a split routine that saw his clients training but once every four to seven days) as I was in learning what he actually did; i.e., how he’d trained to build the incredible muscle mass that he was known for and what he’d personally found to be the most productive muscle-building routine of his entire career. Mike was seated at his desk, and I was directly across from him on a sofa in the living room when I first asked him about it. Mike smiled, knowing that it was the question all aspiring bodybuilders wanted the answer to and, indeed, the very question he himself had posed to his idols, like the great Bill Pearl, when he was starting out in bodybuilding.