Calisthenics has its roots in ancient Greece where it was taught as an exercise method in school, in the army and for the preparation of the athletes getting ready for the Olympic games. In our days it is considered the most timeless training method with the most benefits. Calisthenics is a training system based on the use of the body weight. It includes the use of accessories of gymnastics and exercises influenced by acrobatics. It contributes to the improvement of the neuromuscular junction, the proprioception (sense of the posture of parts of the body), skillfulness and strength. It also contributes to the proper functionality and mobility of the body. It’s goal is absolute control the body, it requires concentration, discipline and mental strength. Therefore calisthenics combines the outer and the inner strength. As it is based on the principle of progressiveness (which means the gradual increase of the intensity and the force the body endures), it is an easily adaptable and accesible training for everybody regardless level and age.