About.com: Exercise
About.com offers expert, quality content that helps users find solutions to a wide range of daily needs – from parenting, health care and technology to cooking, travel and many others.
http://exercise.about.com/
ACE: America Council on Exercise
Get expert fitness advice from the American Council on Exercise with free sample workout programs and workout routines. All exercise programs include a warm-up, full workout and cool-down in addition to step-by-step exercise demonstrations and guidance on frequency and intensity levels.
http://www.acefitness.org/workouts/
Fitness.com
Essentially a library of health and fitness tools and information that aims to give you everything you need to enjoy a healthy life for free.
http://www.fitness.com/
Free Trainers
A free online resource which provides personalized fitness and nutritional plans. The original fitness social network which brings together people from all around the world to a place they can share, learn and interact to create a community built on knowledge, support and encouragement.
http://www.freetrainers.com/
iVillage
iVillage is the largest content-driven community for women online. Many topics are covered including exercise and fitness.
http://www.ivillage.com/diet-fitness
Kids Health
The most-visited site on the Web for information about health, behavior, and development from before birth through the teen years.
http://kidshealth.org/kid/stay_healthy/
LIVESTRONG.COM
The definitive destination for those who want to build their own healthy living success story.
http://www.livestrong.com/
LovetoKnow Exercise
Has information about physical fitness, workout plans, weight training routines, Pilates, cardio workouts and weight loss. Provides resources to help you develop an exercise plan by providing tips and information on how many calories you'll burn and which exercises are most effective.
http://exercise.lovetoknow.com
National Center on Physical Activity & Disability
Information and resources for EVERYONE, from guidelines to consider before starting any kind of exercise program to factsheets on many popular activites, games, recreational pursuits, and sports that have been adapted to allow people with disabilities to participate as fully as they wish, become as active as they wish.
http://www.ncpad.org