Prominent YouTubers have been accusing Brad Castleberry, an Instagram fitness personality with over 740k followers, of performing world record lifts with fake weights. Marc Lobliner of MTS Nutrition recently challenged Castleberry to back up his outrageous strength claims at a fundraiser for the Semper Fi Fund, a charity for military veterans. While Castleberry is unlikely to show up, I discuss in this video why he should.

You can pledge to the Semper Fi Fund, which has an A+ rating from Charity Watch, here: