http://www.ehow.com/guide_6-http://www.ehow.com/guide_6-fashion.html.htmlwww.ehow.comhttp://www.ehow.com/how_4407359_sports-pnf-stretching-techniques-hamstrings.htmlLearn how to give a sports massage for the hamstrings in this free massage therapy video clip, with PNF stretching techniques for warming up muscles. Published on 7/7/2008http://www.ehow.com/tips_4407359.htmlI completely agree. Please be carefull. Students are watching youhttp://www.ehow.com/tips_4407359.htmlI'm confused. Your header says that you are stretching the hamstring but you demonstrate a quadricep stretch. You also claim the technique you show releases the glutes and calf. How? This is a good basic technique for releasing the quads but does not do anything else you claim. In order to elongate the hamstring you have to actually perform a hamstring stretch, which you don't demonstrate at all. Your technique actually shortens the hamstring, not stretches it.