How to build strength and muscle in a 15-minute workout, according to the World's Strongest Man

Tech Insider : Business
Athlete Mitchell Hooper performing a massively heavy deadlift for the World's Strongest Man competition
Mitchell Hooper, the reigning World's Strongest Man, can deadlift 1,000 pounds and is vying for the world record in the exercise.

ROBYN BECK/AFP via Getty Images

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