These resources show how to do exercises and stretches correctly, so you build strength and maintain flexibility safely, without causing injury.
THE AMERICAN PHYSICAL THERAPY ASSOCIATION BOOK OF BODY MAINTENANCE AND REPAIR
Marilyn Moffat, PT, PhD, FAPTA, and Steve Vickery
Round Stone Press, Inc., and American Physical Therapy Association
New York City, 1999
This book has three parts: The first provides anatomical information and care tips for various parts of the body. The second focuses on injury prevention and building endurance. And the third has illustrations and instructions for over 200 exercises, most of which can be done with no special equipment.
National Institute on Aging at NIH
TTY: (800) 222-4225
This website of the National Institute on Aging at NIH has photos and videos of exercises for endurance, strength, balance, and flexibility. You can download the free sample workout booklet Workout to Go, or order it (and others, such as Exercise & Physical Activity: Your Everyday Guide from The National Institute on Aging) on the main National Institute on Aging website.
30th Anniversary Edition
Bolinas, California, 2010
This is the classic book on stretching, with stretches for all body parts and for many types of activities, including working at a computer.