Foam rollers have become an integral part of the decor at every gym around the world these days. Some people seem to have a something of a sadomasochistic relationship with their foam roller, where the relationship started with a plain old smooth foam roller and slowly but surely evolved into a thrill seeking venture, looking for toys with more bumps and nodules and 'sticky outy bits' in a bid to cause more pain and resulting pleasure, oh and more flexibility, recovery, less