The ultimate 'one stop' guide to using foam rollers. A relative newcomer to the fitness scene, lots of us don't know how to use foam rollers effectively as part of an exercise or training routine. Originally used only by physiotherapists and exercise therapists, this 'new' piece of kit has become a mainstay of workouts. Foam rollers work by releasing muscle tension to relieve pain, aid injury recovery and improve flexibility--all through massaging and manipulating muscles.