Runners: Work Your Glutes and Improve Your Time

#3 is the gluteus maximusClick here to see a video, text, and photos on Runners World depicting a set of glute specific exercises. Remember, your gluteus maximus is the largest muscle in your body, but if it is weak, you're losing some potentially extremely beneficial running benefits.

http://www.runnersworld.com/article/0,7120,s6-238-263--13852-2-1-2,00.html