For Holistic-Health Fans

From treating back pain to perfecting your golf swing, this 10-day cruise includes a smorgasbord of wellness lectures and workout demonstrations in a luxe environment.

Ports of call Aruba, Bonaire, Grenada, Barbados and Antigua

Get fit Take a mat-based Pilates class (sign up early; the room holds 30 people) or splurge on a private Reformer session. Fitness walkers will want to try Crystal's exclusive Walk-on-Water program that uses a weighted vest (adding up to 16 pounds) to boost the calorie burn of your stroll. Do it on your own or with a group on the 0.2-mile Promenade Deck, which completely encircles the boat.

Pamper yourself The Crystal Spa is decorated with rock gardens and soothing water fountains to inspire that Zen nothing-can-stress-you-out feeling. Slip into a robe and try an Ionithermie Algae Wrap ($132) -- after you've been covered with algae-infused natural clay, you rest for an hour and then follow up with a cooling body lotion. The Aroma Spa Ocean Float with half-body massage ($176) is performed on a dry-float bed that's similar to a waterbed.

Book It From $2,950; departs Miami (crystalcruises.com).