One thing you definitely shouldn’t miss? Spending an afternoon at one of Riviera Maya’s many cenotes—essentially they’re giant sinkholes in the ground exposing underground lagoons, once considered sacred spots by the Mayans. Today, visitors flock to them for swimming, snorkeling, and cliff-diving, with the reservation-only Cenotes Tankah and Dos Ojos being two of the best options.
Another pro tip: Take advantage of the cenotes’ proximity to Tulum. After a morning of swimming under a canopy of foliage, head to the boho beach town’s Yaan Wellness Spa for treatments that incorporate traditional Mayan herbs and shamanic energy healing techniques. Or, if you time your visit to a new or full moon, you can partake in a temazcal sweat lodge ceremony—an ideal remedy if you did have one too many margaritas the night before. (Hey, this is spring break. No judgment.)
Source : https://www.wellandgood.com/good-travel/healthy-travel-guide-cancun-playa-del-carmen-mexico/291