ym membership can be unhealthy for your monthly budget. But there's a place where you can enjoy the same facilities or more for a quarter of the price. The Curtis Hall Community Center is a great hidden deal, with a low annual membership fee and a ridiculously cheap monthly charge (even cheaper if you're a Boston resident) for use of the cardio fitness center, basketball court, and indoor running track. There are also leagues and tournaments in basketball and volleyball. The indoor pool? It costs a buck per visit. And how many gyms have childcare and playgroups? Healy