Why Are so Many Stars Doing the #BottleCapChallenge?
A glass or plastic bottle with a twist-off cap is centered on a table or held by someone else. The goal is to give the bottle a roundhouse kick that spins the cap off. Jason Statham, John Mayer and Ellie Goulding are just some of the big names to master the challenge. MMA fighters Max Holloway and Jon Jones, kickboxer John Valenitini, and UFC fighter-turned-boxer Conor McGregor have all shared videos of themselves on social media doing the challenge. McGregor even called on his opponent both in and out of the ring, boxing champion Floyd Mayweather, to step up.