High density foam roller is great for physical therapy, before or after exercise, yoga, and massage therapy. foam muscle rollers helps to relieve muscles tension and increase muscle reflexology. Also can break up the soft tissue adhesions and scar tissue, Self-massage and myofascial release, break trigger points, relieve tension fascia while increasing blood flow and circulation of the soft tissue. This is multifunctional massage equipment ideal for self-massage, balance training, and to get relief from back pain, knee pain, and calf pain, shoulder pain, running injuries, muscle tightness, & body aches. Can eliminate muscle tension, and strengthen the core muscle strength and flexibility, stretching the muscles and tendons, lipid-lowering toning. A low-density muscle roller is convenient to use and very effective at stretching strained muscles and penetrating the soft tissue layer of tired muscles.