NPC Bodybuilder Matthew Petersen Trains Massive 21-Inch Arms in His Shoulders and Arms Training Session

Matthew Petersen

Bodybuilder

NPC National-Level Bodybuilder Matthew Petersen trains his massive 21 inch arms during an upper body training session. Matthew trains incredibly heavy during his off-season including military pressing 365 lbs. He gives a little demonstration of strength, pressing 225 lbs on military press pretty easily, just one day after competing at the 2018 NPC National Bodybuilding Championships. If you want to see some of the best biceps peaks in the NPC, don’t miss this video.

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