I 've just tried the movement from 04.00 to 05.35 for about 5 minutes for 2 days and I can feel the joints of my legs were more flexible and strengthed and I feel no more joint-pain after my basketball training today. Trust me! I'm 49 years old and I have been active for sports to keep healthy so, I can really feel the difference. Thanks for uploading! Highly recomended!