The five-time Pro Bowler posted a video on Instagram on Friday of himself doing one-handed shoulder presses with — get this — a 135-pound barbell. That’s an absurd amount of weight to be throwing around one’s head. 

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Harrison is no stranger to pushing the limits in the weight room, but he may have just set the bar. There’s a reason his nickname is “Silverback,” after all.

Harrison did the same with a 115-pound barbell, and did so making it look like a walk in the park.

Harrison finished the 2014 season with 29 tackles and 5.5 sacks.

Source: Bleacher Report