Amansala in Tulum, Mexico, has all the hallmarks of a sublime tropical getaway — a white-sand beach, gorgeous turquoise waters, roomy cabanas, spa treatments, incredible local eats and cool cocktails… But it’s the myriad activities that, year after year, really draw vacationers to this corner of the Mayan Riviera. One minute you’re trekking along scenic pyramid ruins; the next, you’re snorkeling in the pristine waters of centuries-old cenotes. Those looking to shed some pounds in paradise, meanwhile, can sign up for its world-famous Bikini Bootcamp, Destination Detox or Beach ’N’ Bliss yoga programs. Consider it a vacation for mind, body and soul…