H.I.R.T.S. Climber is the first element of the original H.I.R.T.S. unit. The main function of the Climber is to simulate climbing an actual rope but from a position where it's not mandatory to have a high ceiling or special facility. By knowing the effect of the elastic bands resistance, Coach Ivan Ivanov created the H.I.R.T.S. Climber to be effective for training athletes with different strengths and physical abilities. Climbing from a standing position also engages the legs and the lower back muscles, which is difficult to accomplish with the traditional climbing rope.