All muscle cramps: Page 1
- By Jeff Gaudette
- Published Sep. 27, 2013
- By Kelly O'Mara
- Published Sep. 17, 2013
- Updated Sep. 17, 2013 at 3:36 PM UTC
Despite modern science, the true cause of exercise-induced cramps is not known.
- By Mario Fraioli
- Published Jul. 1, 2011
- Updated Mar. 15, 2012 at 5:10 PM UTC
In this video a runner describes what it's like to be a marathon runner in training.