Is it possible to gain 63 pounds of muscle in less than a month? What about 15 pounds of muscle in twenty-two days? By any metric such results would be phenomenal but few people believe such a feat is manageable.
Yet in the early 1970s, Arthur Jones, creator of the Nautilus machines, claimed it was possible through his own brand of High Intensity Training (HIT). What’s more, he claimed he had scientific backing for his claims.
So what exactly happened during the Colorado Experiment conducted by Jones and was he telling the truth? Have strength enthusiasts been selling themselves sort by setting low targets for muscle gain? After all if such training can yield 15 to 63 pounds of muscle in one month it must be worth doing.