UFC fighter Sam Alvey takes on a try not to laugh challenge ahead of UFC 254.
Alvey takes part in a #LaughChallenge appropriately dubbed, "Sam Alvey Tries Not to Smile". The six-year UFC veteran takes on Da Un Jung on Saturday's card.
UFC 254 takes place on Saturday, October 24 from Fight Island on Yas Island, Abu Dhabi. The pay-per-view card is headlined by Khabib Nurmagomedov vs. Justin Gaethje for the UFC lightweight championship. Keep up with Fightful for all your fight night coverage.