In March 2014 the city of Boston launched a program called “Prescribe-A-Bike”. Under this program Boston Medical Center physicians can prescribe low-income patients struggling with obesity subsidized memberships ($5) to Boston’s bike share program (Hubway) and free helmets. Prescribed exercise is growing in popularity, and bike share programs are good solution for urban residents wanting outdoor exercise. Biking is perhaps the best exercise for overweight residents, because unlike running it is not hard on joint, not to mention these subsidized Hubway memberships are far cheaper than gym memberships. The city’s goal for “prescribe-a-bike” is to provide low-income residents in need of more active lifestyles with affordable transportation and exercise.