Definition: Exercising to the extreme in intensity, frequency and/or duration. Overtraining can cause a variety of symptoms such as fatigue, elevated resting heart rate and lowered performance. There's no specific definition of what too much exercise is - all of us have a different tolerance for how much exercise we can handle. The key is to back off if you notice any symptoms of overtraining.
Overtraining
By Paige Waehner, About.com Guide
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
Explore Exercise
Must Reads
About.com Special Features
Learn how you can reduce your your numbers with these nutrition and exercise tips. More >
Keep yourself, and your family, happy and healthy this fall with these tips. More >
Also from About.com:
©2009 About.com, a part of The New York Times Company.
All rights reserved.