I forgot to post a few more things bout the Rehab manual. You can also check out a bit more about the manual here at the Bertolacci site. Head to the Products page for more info about the Hamstring Rehabilitation manual, or check out the resources page for more Hamstring Injury Information. You can also check out Dads blog and find a lot of strength and conditioning information and thoughts. He knows his stuff and if you are interested in athletics and strength and conditioning then you should check it out.