Your IT band, or iliotibial band, is a thick line of tendinous tissue that extends from your pelvis to your knee running along the outside of your thigh. Surrounded by important muscle groups, it is quite common for this band to get inflamed and cause discomfort. The idea of foam rolling your IT band is extremely controversial, with some health and fitness professionals calling it dangerous and ineffective. If you decide to roll your band, stick with a basic set of moves. Watch out for any warning signs and consider alternative possibilities for maximizing the potential of your IT band.[1]