By Adam Lujan
Updated August 17, 2016 at 03:04 PM EDT
Dave Benett/Getty Images; Roy Rochlin/FilmMagic; Jason LaVeris/FilmMagic

The #22PushupChallenge is spreading across social media, and now Tom Hardy, Kevin Hart, Millie Bobby Brown (Stranger Things), and others are getting in on the action.

Earlier this week, Chris Pratt, Chris Evans, the Rock, John Krasinski, and a slew of other celebs honored veterans by taking the #22PushupChallenge, an initiative to raise awareness for veterans’ mental health that seems to be attributed to the organizations 22Kill and Combat Stress. Since then, plenty of others have gotten involved, including Kevin Bacon, Aaron Paul, Josh Gad, Ludacris, Mario Lopez, and Michelle Monaghan.

Hardy lent his muscles to the cause wearing a surprising getup that must be seen to believed. And after doing his set of 22 push-ups, Houston Texan player JJ Watt tapped Olympic gold medalist Simone Biles to take the challenge. Maybe she can rope in her new pal Zac Efron in on the action.

Check out the new set of videos below.