Overview
The 17-year-old met up at a gym in south London, and despite being half the weight of
The Hayemaker, he still decided to give it a go as part of a feature for the boxer's new magazine.
A source told The Sun, 'Justin was quick on his feet. But then he should be, given his age and size. He remained focused the entire time.
'He was probably a little scared. He didn't look like he wanted to be caught out with a clip round the ear.'
David took to Twitter following the match on Sunday to say how impressed he had been by the teenage heartthrob. 'Great workout in The Hayemaker Boxing Gym @justinbieber. You sure can pack punch!! I'm now a Belieber! Stay Blessed!' he wrote.
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