Work your core muscles to be faster and injury free

Hi stairmasters,

It was a long time since you got some news...
I would like to suggest some cross-training exercises that are supposed to help us to have a nice running posture: http://www.runnersworld.com/article/0,7120,s6-238-263--13030-3-1X2X3X4-5,00.html

If you do these routine exercices 3 to 4 times a week, I ensure you that you will (almost) get the same abs as Lolo Jones....

Let me know your opinion ;=)

Isabel and Chris, we are not forgetting you, we will let you know for NYC marathon as soon as we will get more informations!