In a city as bike-crazy as Philadelphia, even occasional riders take for granted that everyone knows how to ride a bike. But just as there are many people who never suited up for swim lessons, there are many adults—myself included—who never wobbled their way off training wheels. If you never felt the urge to learn, thought it was impossible, or feel a bit rusty in the saddle, REI stores in Conshohocken and Marlton, N.J. host a stress-free way to get your wheels turning. The outdoor outfitter’s How to Ride a Bike Class instructors teach adults and families how to get comfortable balancing, starting and stopping smoothly, adjusting a bike to your size, and effective falling, all in one four-hour class. Biking is one of the most environmentally friendly modes of transport, and with just a few hours of skill-building, you can be one step closer to independence from your automobile. Whether you plan on bicycle commuting, mountain biking or just cruising around the neighborhood, this class will help get you there. - Allison Bart
How to Ride a Bike classes, ongoing, $45-$65. Visit rei.com/class/121/market/200 to register.