When I went into my trainer a few weeks ago I was telling him that I was having trouble with my hamstrings being really tight even after stretching.
He had just gotten back from Arizona helping his father launch a new product he designed at the P.F.Chang Rock N Roll marathon. The product is called the Muscletrac and you use it after workout or just any time you feel sore. It looks like a rolling pin with gears on it. You roll it on the affected area sabout 10x. I am telling you after using it everyday for 2 weeks I have noticed a big difference.
What it does it is works out the tension and lactic acid build up in the sore areas to promote healing.
I was using one of those big hard foam rolls and that was so painful the way you had to use it I stopped. This thing is so great, you are able to control the tension so if you are overly sore in one area you just work it a little easier.
www.muscletrac.com It cost about $54 with shipping and tax and only took 4 days to get to me.
I love this thing!!!!