Active Karma
   Comprehensive set of exercises for all major muscle groups, plus general exercise information.
   http://www.activekarma.com/activekarma/categories/category.asp?catid=95

Aerobics and Fitness Association of America (AFAA)
   The world's largest fitness educator, providing certification to fitness professionals, and educational materials for professionals, corporations, and enthusiasts.
   http://www.afaa.com

Aerobics and Fitness Daily
   News, articles, and commentary on aerobics and fitness.
   http://www.fitness-daily.com

Alexey's Stepcenter
   Animated choreography, step language dictionary, music board, links and message board.
   http://www.stepcenter.com/

Aqua Aerobics
   Education, training, and aquatic exercise clinics for individuals, fitness trainers, organizations, and hosting groups.
   http://www.aquaaerobics.com

AquaFun Fitness
   Offer courses in water aerobics, fitness, and training. Includes description of services and contact details. Lowestoft Suffolk, UK.
   http://www.aquafunfitness.com/

Cooper Aerobics Center
   Includes clinic, spa, hotel, in a 30 acre resort-like setting. Dallas Texas.
   http://www.cooperaerobics.com/

DanceNet Fitness
   Dance as an alternative to mainstream fitness. Instructor and Studio listings by state.
   http://www.dancenetfitness.com

Easy Exercises
   An online programme of exercises to be incorporated into your everyday life.
   http://www.easyexercises.com

FitMoves
   For professionals and enthusiasts. Articles, choreography exchanges, videos, spinning database, sample programs, personal training tips.
   http://www.FitMoves.com

Jacki's Aerobic Programs
   Jacki Sorensen's dancing, workout and strong step classes includes the US and Australia. Class locator, gear, videos.
   http://www.jackis.com

Jumpybumpy
   Instructor portal offering aerobics and step choreography, videos and music, conventions and workshops, trainer listing.
   http://www.jumpybumpy.com

Mad Dogg Athletics and Spinning
   Education, apparel, forums, advice and accessories. Venice, California.
   http://www.spinning.com

Mr. Move it
   Fitness trainer and creative artist of movement. English and German.
   http://www.mrmoveit.org

SALSArobics Inc.
   Dance exercise program combining popular Latin dances with exercise physiology.
   http://www.salsarobics.com

Stride Walkfit
   Brisk arm movement with the use of poles in conjunction with walking, also a series of stretching and toning exercises.
   http://stride.gabel.net/

Turnstep
   Large repository of aerobics choreography and patterns plus video reviews and an active discussion forum.
   http://www.turnstep.com

Vita's Vibe
   AFAA instructor and examiner's site includes forum, routines, news, tips, and guidance.
   http://www.vitasvibe.com

WaterGym
   Deep water workout which mimics running, biking and weight lifting.
   http://www.watergym.com

WebAerobics
   Directory portal for aerobics information on the web.
   http://www.webaerobics.com