Why foam rolling? Good question, it is important to think about fascia. Fascia holds everything together and has memory. If there is a buildup of extra fascia due to an injury or repetitive motion that fascia has to be dealt with or will limit the glide in a particular area. If for example the it band is tight and won't allow the proper tracking of the knee cap due to a lateral pull you must release that tension or the patella won't ride in the femoral groove and therefore cause pain when flexing or extending the knee. That fascia needs to be released to allow the proper movement of the patella in the groove. Foam rolling as well as lax ball work is one of the best ways to release that tension and return your fascia to normal condition.