Orangetheory Fitness

We've got a fail-proof "theory" for getting in shape in 2015. Orangetheory Fitness has set up shop in Brentwood, hosting their heart-pumping group fitness class (a la Barry's Bootcamp) that uses circuit training, (switching from rowing machines to weights to the treadmill), and is never boring because they're always changing things up. What makes this group class different from the rest is the focus on the heart. And no, we're not talking about mushy lovey-dovey heart stuff here, we're talking about the heart rate monitors you strap on before every class to track your progress on the big screens while you workout. Tracking your heart rate will make sure you're working out efficiently and giving it your all—to help you reach personal target heart rate goals and burn fat for hours after your class finishes. New members can try three sessions for free to get a feel of the workout, and after that class package options start with $199 for 10 sessions ($20/class) and they even offer unliminited classes per month membership options for those truly committed to getting in shape.