We've stumbled on a new trend we're kinda loving—fitness vacations that actually sound like a whole lot of fun. New York-based Pilates a la Playa is conducting a 6-day Pilates and yoga retreat to the Cayman Islands this fall, and the itinerary includes seaside classes, in-room massage, and planned outings for sunning, shopping, and dancing. Staying in paradise and returning with a toned tummy ( not a little holiday jiggle) is almost too good to be true.

Trip masterminds (and buddies) Nicole Sweet and Marisa Thrasher began planning the trip in 2007 while working together at a marketing firm. "I've always been trying to figure out how to be in beachy environments, and retreats are good at incorporating my passion for Pilates," said Sweet, a certified Pilates teacher. "Marisa's a beach girl at heart and when she moved to Cayman, she just ran with it."

"Our goal was really to put a fun spin on the typical retreat. As much as we're dedicated to the practice, we're also into letting loose and enjoying all that life has to offer!" said Thrasher. Classes are held within eyesight of the ocean, and swimming with stingrays is on the itinerary. The final icing on the cake? The trip includes a beach photo shoot to show off hard work and your tan. If there's ever been a chance to indulge in any Sports Illustrated fantasies, this just might be it.