The Rock, aka Dwayne Johnson, took part in the ALS Ice Bucket Challenge over the weekend after he got called out by Ronda Rousey. The challenge, which was created to build awareness for amyotrophic lateral sclerosis (ALS), commonly known as Lou Gehrig’s disease, challenges people to either donate to ALS research or douse themselves with ice water within 24 hours of being challenged. He, in turn, challenge Channing Tatum, Mark Wahlberg and Brad Slater.

UFC President Dana White challenged Rousey last week, and she duly stepped up while working hard on the promotional trail for The Expendables 3. Check out all three doing their bit for a very good cause. The Ice Bucket Challenge has been an unprecedented success, and has raised $15.6m between July 29 and August 18, which is an 867 percent increase on the amount raised during the same time last year. Congrats to all those who are taking the challenge and donating to the cause. For more information, visit the ALS Association.