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.