Green Bay Packers first-round pick Datone Jones is used to the hand-to-hand combat that goes along with living in the trenches on the football field. 

The 3-4 defensive end knows that he'll be facing the best of the best, week in and week out in the NFL.

With that challenge ahead, Jones spent some time at Travelle Gaines' gym working with, among others, Fox Sports reporter Jay Glazer, who has been working out and doing Mixed Martial Arts with NFL stars over the years. 

Why MMA? Let Jones tell you in his own words in the video above.