When pollsters interrupt people’s dinners to ask about their New Year’s resolutions, very often the top three responses are “get in shape,” “lose weight” and “save money.” Find a deal on a gym membership, and you can do all three. Here’s how.

Jeff Battersby walked into Grace and Glory Yoga in Northfield on a cold January day to try a class recommended by a friend. It was intimidating, the idea of trying something completely new at a place where he didn’t know anyone, but then he spotted an old high school classmate.