Learning rhythmic gymnastics is a long and arduous process. Watching this video, I have to admire these girls for their willingness to practice these moves enough so that they are starting to master some of the moves. They have obviously worked on body flexibility and now are working on the coordination to do the exercises. This gives us a peek into a rhythmic gymnastics training session.
If you are wondering how rhythmic gymnastics got started, wikipedia says:
During the 1880s, Émile Jaques-Dalcroze of Switzerland developed eurhythmics, a form of physical training for musicians and dancers. George Demeny of France created exercises to music that were designed to promote grace of movement, muscular flexibility, and good posture. All of these styles were combined around 1900 into the Swedish school of rhythmic gymnastics, which would later add dance elements from Finland. Around this time, Ernst Idla of Estonia established a degree of difficulty for each movement. In 1929, Hinrich Medau founded The Medau School in Berlin to train gymnasts in “modern gymnastics”, and to develop the use of the apparatus.
Read more at http://en.wikipedia.org/wiki/Rhythmic_gymnastics