Everyone can benefit by incorporating BE into their training regime. BE is designed as a main purpose of strengthening and activate your lower leg and foot muscles to improve your running performance. Another purpose is to encourage intrinsic foot muscle activation, both in rehab or general strengthening sense. Developed from the ancient Japanese Waraji sandals, which was shorter than the length of the foot. BE"s sockliner dips just behind the toes, creating a space that allows the toes to flex and move freely, resulting in more muscle activity.