Justin Bieber's Boxing Trainer is Mike Tyson

Obviously. Justin Bieber loves combat sports, plus he’s one of the biggest celebrities in the world. Of course, Mike Tyson will take time from his various ventures to hold the heavy bag for the Biebs.

[@MikeTyson, h/t FightLinker]

Previously: Justin Bieber and 50 Cent Walked Floyd Mayweather to the Ring
Previously: Justin Bieber Brought Anderson Silva on Stage to Dance in Rio

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