He's wrestled live bears and sprinted up mountains, but now Khabib Nurmagomedov is taking his training to the next level ... swimming a freezing cold Dagestani river!
Oh, and he's swimming against a pretty strong current!!!
THIS IS INSANE!!
Khabib -- who recently defeated Dustin Poirier -- is gearing up for a tough fight (presumably against Tony Ferguson) and he's not wasting any time getting into fight shape.
Which is why he ended up taking a dip in a river in Kizilyurt -- a small town in Dagestan.
Khabib's pal (who goes by King Farruh) shot the footage and gave his account of the session.