MMA fighter Khetag Pliev is so tough, he's already working out again ... less than a week AFTER SOMEONE RIPPED OFF HIS FINGER!
Remember, Pliev was fighting Devin Goodale at Cage Fury Fighting Championship in Philadelphia on April 1 when suddenly everyone noticed Pliev was missing a digit!!!
People scoured the arena looking for the detached finger -- which was ultimately located inside Pliev's glove.
37-year-old Pliev was rushed to a hospital and doctors were able to successfully reattach it.
Fast-forward 6 days .