Lay a monster tire flat on ground. With your feet shoulder width apart, swing the sledge hammer overhead and strike the tire as hard as possible alternating left and right.

Sledgehammer training--wherein one exercises by lifting, swinging, and mashing an industrial-grade sledgehammer into an old, worn-out rubber tire--is really, really good for you. The movement ...

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Marlins slugger Giancarlo Stanton gets his power by beating up on tires in the off-season. Miami Herald file photo Marlins opponents might be quaking in their cleats after watching a workout video ...