Would you take an icy-cold shower for a good cause?
Ice bucket challenges are being used to raise money for special causes. Style expert Martha Stewart has been doused. So has Matt Lauer from NBCs Today show. And pro golfer Greg Norman did it, too.
Those willing to pour ice water on themselves then challenge others to do the same. If they don't, they must make a donation to a charity. Each person asks more friends, who nominate still more friends.
Friends and relatives of former Boston College baseball player Pete Frates used it to raise awareness about Lou Gehrig's disease. Lauer got soaked with ice water after Norman challenged him.
Operation 300 in Stewart, Florida, hosts a camp for kids who lost their fathers to war. Firefighters raise money for the foundation. It costs $20 to have the icy water poured on you. If you don't want to get wet, you still can be involved. But you have to pay $50!
There can be dangers. In some states, police warned parents and kids to avoid jumping into frigid or fast-moving waters.