Start on all fours. Extend your right arm in front of you and your left leg behind, actively reaching in opposite directions.
Bodybuilding Bros on MSN
Hafthor Björnsson's boxing workout: Here's how 'The Mountain' trained for combat after weight lifting
Hafthor “The Mountain” Björnsson traded strongman racks for the boxing ring, leaning down, sharpening his footwork, and ...
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