February 3 is World Yoga Day, an international fundraising event in which yoga teachers and centers around the world donate their time and space to a two-hour yoga session. The session will be held from 11 a.m. to 1 p.m. (local time). Students attending the event can donate whatever tuition they choose. All proceeds will go to Amnesty International. (Last year, proceeds went to help women in Afghanistan.) Visit www.world-yoga-day.net to find a participating studio in your neighborhood, or, if you are a yoga teacher or studio owner, to add your name to the list.