Today at physiotherapy my therapist used Voo Doo Bands on my knee. I have been working on flexion and with that I had lost some extension. He put these bands on my knee and did some manual work for only a few minutes. Then low and behold my extension was perfect. I suggest these bands be a staple in any athletes collection of gear! I need to get a set of these! So if anyone knows Rogue Fitness let them know I want a set.