Arnold Schwarzenegger gained his first real notoriety outside body-building circles with this documentary about a group of men training for the Mr. Olympia contest.Arnold had already won the title five times before, and was training for his sixth victory before retiring to fully pursue his acting career (which began to catch fire with his likable turn in Stay Hungry, released the same year) when this was shot.
Here he displays an easy charm and wicked sense of humor as he plays mind games with his competitors and explains how getting pumped up for competition always felt like sex (which might explain why he seems so cheerful).