Located over a large area of the body, including the back, sides and behind the arms, the latissimus dorsi muscle (lats) is responsible for several functions in the body. This includes a key role in shoulder extension, adduction and internal rotation of the arm at the shoulder joint. While not used strenuously day to day, it’s an important muscle used during exercises such as swimming, pull-ups, chin-ups and pull-downs. However, these activities can leave the area feeling tight and sore after training. The solution? Use a vibrating foam roller to loosen the muscles and soften the surrounding connective tissue. In our handy guides, we show you how to use a foam roller on tight lats, positioning the roller under your side. The unique blend of pressure and vibrations enhances blood flow to the area while flushing away lactic acid. Use the portable roller in your warm-up and recovery routines for achieving the most effective results. Watch the Pulseroll in action now. Also find this post on our Google+ profile.