For Exercise Devotees

We know you take Shape to read on many vacations, but this time you can leave it at home. The entire weeklong cruise is about bringing the Shape philosophy to life.

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.