In late February, just when you think you're about to lose your mind trekking through gray slush puddles, treat yourself to 7 days, 6 nights, 12 invigorating classes, delicious, healthy meals, day-trips to Mayan ruins, snorkeling, bliss-inducing spa treatments, and many well-deserved hours spent lounging on private white-sand beaches of Sueños Tulum.