It is well-accepted that exercise is good for the body and can help relieve stress.

There are many medical discoveries, physical therapy practices and other areas of study in which the benefits of exercise are being documented and put to use.

Here is a small sampling of some web sites where the health benefits of exercise are discussed:

American Lung Association:
http://www.lungusa.org/site/c.dvLUK9O0E/b.23010/k.6F12/Exercise_and_Keep_Active.htm

Body Building Perspective:
http://www.liftforlife.com/HormonesAndExercise.htm

Exercise and a Wide Range of Physical and Mental Benefits:
http://www.psycheducation.org/hormones/Insulin/exercise.htm

Exercise’s Effect on Appetite:
http://www.scienceblog.com/cms/exercise-suppresses-appetite-by-affecting-appetite-hormones-17972.html

National Osteoporosis Foundation on Exercise:
http://www.nof.org/prevention/exercise.htm

There are many more resources.  Search the web.  Share what appeals to you.