Tulum sits on the Caribbean coast of Mexico's Yucatán Peninsula, two hours south of Cancún airport, with a long white-sand beach backed by jungle, Mayan ruins on the cliff at its northern end, and freshwater cenotes inland. The beach road is a line of open-air restaurants and palm-roofed beach clubs; the town behind it is where the training resorts and yoga shalas are. Barefoot and unhurried by day, lively by night, it draws people who train and eat well without making a fuss about it. The dry season from November to April is retreat season: warm days, cooler nights, clear water.

Fitness retreats here

• Zamaya, Tulum: The Ultimate Luxury Bootcamp — 7 Nights in a World-Class Training Resort