Feldenkrais Lesson Pelvic Clock Variations This Feldenkrais lesson takes the theme of the Pelvic Clock in other directions. Its value lies in the slightly different demands it places on your nervous system. This is how you can develop with variation of a Feldenkrais Lesson. It is very useful to do this. It helps in developing the subtle and intricate qualities of awareness that a Feldenkrais lesson and Feldenkrais Practitioners are renowned for. Develop a greater mobility with your pelvis.