Burn off the weekend carbs by cycling to help raise money to fight multiple sclerosis at Flywheel on the Upper West Side. The stylish sweatfest is a partnership between MS Hope for a Cure, the New York City/Southern New York Chapter of the Multiple Sclerosis Society and Flywheel. Each ride is 45 minutes long, so stretch beforehand.
Flywheel, 470 Columbus Avenue, (212) 242-5161, 7-11pm, registration $25 per bike, fund-raising minimum of $1,000 per bike.