'A hammer grip bicep curl holding the foot cradle at the end of the suspension trainer. Thor\'s hammer Mjolnir has a strap at the end so we use that in honor of the thunder god! One of the exercises from the TRX Superhero workout.'
Tags: bodyweight exercises , trx , arm exercises , biceps exercises , Hammer Curl , fun exercises , jonathan ross , Superhero exercises , Funtensity
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