Cruise For Exercise Devotees

Ports of call: Key West, Fla.; Costa Maya, Mexico; and Belize City, Belize

Get fit: Some of the workouts include Reggae Cardio, Yoga, Strength Training 101, Capoeira (a Brazilian martial art), tai chi, qi gong and Power Ball (Pilates with lightweight gel balls). Well-known aerobics instructor Garth Sommerville teaches Jamaican/Caribbean Cardio Dance with live drumming on deck -- always a huge draw -- and Shape assistant fitness editor and certified personal trainer Teri Hanson leads Pilates and yoga classes.

Pamper yourself: The 13,300-square-foot Polynesian-style Spa Carnival offers an indulgent menu of treatments like couples-only massage ($242) and the Elemis Exotic Lime &Ginger Salt Glow exfoliating treatment with a deep-tissue, half-body massage ($141).

Book it: From $679; the Carnival Glory departs Port Canaveral, Fla., on Dec. 2 (www.Shape.com/cruise).