Celebs are raising money and awareness for Lou Gehrig’s disease with the Ice Bucket Challenge. It involves dumping a bucket of ice water on your head and challenging someone to do the same or make a donation to ALSA.org.

Justin Timberlake, Jimmy Fallon, Matt Lauer, Facebook founder Mark Zuckerburg and more have done it. Watch them below, join in and challenge someone today!

Justin Timberlake and Jimmy Fallon


Matt Lauer


Facebook founder Mark Zuckerburg


Martha Stewart


Dallas Cowboys’ Dez Bryant and Tony Romo


Extreme Ice Bucket Challenge


Elizabeth Banks