http://www.irongymreview.com/what-causes-muscle-cramps/ Sat, 21 Mar 2009 01:58:48 +0000 http://backend.userland.com/rss092 en Muscle cramps are temporary contractions of the muscles and they usually appear during physical effort. The sensation is similar to the one you have when you feel a strong, involuntary tightening of the muscle group that you can't control any more. There are many causes which bring about cramps, but ... http://www.irongymreview.com/what-causes-muscle-cramps/