If you’ll be in New York City or Boston this summer, stop what you’re doing and sign up for ClassPass. I’ve been using the service for almost a year and have always thought it was a fantastic value–$100 per month for 10 classes at top boutique fitness studios. But ClassPass completely outdid themselves with a Memorial Day through Labor Day deal. For the same $100 per month, you get unlimited classes at all the same studios (limit to three classes per studio per month). Considering individual classes range from $20-40 in the city, it’s a deal you can’t pass up. If you’re visiting or interning in one of these cities, you can also cancel ClassPass with no fee in August. Click here for more details and to sign up for this offer before Memorial Day.