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Watch Mr. Universe Mike O’Hearn’s Biceps and Triceps Workout

Four-time Mr. Universe Mike O’Hearn is training hard (and at 51 years old, he has the results to show for it). The bodybuilder recently posted a video of his arm day training split during a period when he’s training two-a-days over a two week span.

O’Hearn starts his session focusing on biceps, so that means lots of curls. He works through sets of incline curls, then spider curls. And while…