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Doctors sound alarm as two people's biceps 'blow up' while trying popular exercise
Doctors have warned against a popular CrossFit challenge after a former World's Strongest Man competitor from Minnesota claimed his arm muscles 'blew up' from attempting it last year.
Doctors have warned against a popular CrossFit challenge after a former World's Strongest Man competitor from Minnesota claimed his arm muscles 'blew up' from attempting it last year.
