Introducing the world's biggest biceps, the biggest biceps in the world! This guy's biceps are huge!! The guy's name is Greg Valentino and he has (unofficially) the biggest biceps in the world. But building the world's biggest biceps is not an easy task! Greg has been working his huge biceps for over 20 years. So what do the biggest biceps in the world dumbell curl? Greg Valention is capable of 300 pound dumbell curls! That's insane!
