As illustrated by your last mat-eating yoga pose, balance is key. Find true equilibrium (and a little sanity) at Life in Synergy, a new fitness studio opening in Back Bay today. Classes are just $15 a piece (or ten for $120), and there’s no membership fee. From yoga sculpt to vinyasa dance, lessons in the Water & Wind studio are calm and soothing, while the Fire & Earth room runs heart-racing options like Zumba; Olympic conditioning; and our fave, Japanimation (for that Pussycat Doll swagger). Online booking, fully outfitted locker rooms, and an ecofriendly outlook (low-flow showerheads, corn-based ID cards) are all part of the package. How’s that for perfect harmony? Life in Synergy, 867 Boylston Street, second floor, Back Bay (617-867-6500 or lifeinsynergy.com).