One of the joints that naturally falls under the most pressure, due to its anatomical location, is the heel. Heel stretching is important in any workout, but especially if a person's ankle or leg is in need of rehabilitation. Traditionally, heels have been stretched against walls or steps, but recent studies have found these methods to be ineffective and in some cases possibly hazardous. A University of Colorado study proves the Prostretch stretches the heel cord more effectively by preventing the malalignment and compensatory pronation associated with wall or stair stretching. The ProStretch directs body weight into its heel cup, which prevents co-contraction and weight bearing on the metatarsals. In this way, the ProStretch provides a better and safer alternative to traditional methods of heel stretching.