Sidney Crosby is the latest athlete to get in on the ice bucket challenge, a crazy act to create awareness of ALS (Amyotrophic Lateral Sclerosis) aka Lou Gehrig's disease. This trend evolved by Peter Frates, a former Boston College baseball player who was diagnosed with ALS two years ago.

So this is how it works: You fill up a bucket of ice water, and grab a camera. You inform everyone about the cause, and pour that bucket over your head. You then challenge someone else to complete the same challenge. They have 24 hours to post a video of themselves taking an ice water shower before passing on the challenge to others. If they opt out, they donate $100. Post the video using the hashtag #icebucketchallenge on all your social media accounts with a link to donate to the ALS Association.