David Goggins responds to UFC fighter Sean Strickland's call-out to spar. Known for his relentless determination and mental toughness, Goggins takes the challenge head-on but with a twist! Instead of stepping into the ring, Goggins throws down his own gauntlet, calling out Strickland to an epic exercise challenge in his latest Instagram post. Will Strickland accept the challenge? Tune in to see Goggins' fiery reaction and hear his inspiring words as he continues to push the limits of what it means to be unstoppable. Don't miss this intense and motivational exchange between two incredible athletes! #DavidGoggins #SeanStrickland #goggins Click here to Subscribe to our YouTube channel http://bit.ly/2quZwsz Follow My Twitter https://twitter.com/Keanutalksmma Click here to like our Facebook page https://bit.ly/2ZmykdU Watch our most recent video! David Goggins is a retired Navy SEAL, ultra-endurance athlete, motivational speaker, and author known for his incredible mental toughness a