For those who want to be strong on the pull bar here is a video that will give you goose bumps. As the title states, he performs 50 one arm pull-ups within 8 minutes. Moreover, don’t you think the man in the video will possess big bulging biceps? Apparently, right after the challenge when he gets down the pull-up bar you can see his bulging biceps underneath his T-shirt. I don’t think that he would waste time performing bicep curls day in and day out. Rather, he would prefer spending time on the pull-up bar. I suppose that you have the right clue here to build big and strong biceps.