Core muscles, like a pair of shoes, improve posture, enhance athletic performance, and complement form-fitting HAZMAT suits. Accessorize healthfully with today's Groupon: for $60, you get 10 one-hour group Pilates classes (a $120 value) at Sixth Street Pilates. Customers should consult the online schedule and bring their Groupon to their first class. Students can bring their own mat, or rent one for $1. This deal is valid for new clients only.

Combining challenging workouts, highly trained teachers, and a learner-centered environment, Sixth Street Pilates has earned the praise of New York magazine and many previously neglected core muscles. Group classes revolve around precise, focused movements that condition the body, particularly the back and abdomen, while working the mind into a luxuriant lather. Mat classes encourage good posture by stretching ligaments, toning muscles, and bolstering balance, whereas Get Engaged groups teach students how to manipulate Magic Circles—flexible rings that target problem areas using strength-building resistance. Instructors help students at each skill level develop proper form, showering them with individual attention and bursts of confetti.

In addition to hosting mat sessions for newcomers, Sixth Street helps injured exercisers and moms-to-be modify group routines to provide added safety and therapeutic benefits. The studio also takes pride in being green, lighting its space with wind-generated electricity and the ambient glow of excited fireflies.