http://www.johngibbonsbodymaster.co.uk John Gibbons is a registered Osteopath, Lecturer and Author and is demonstrating how to lengthen the piriformis muscles using a soft tissue release technique like STR or even a muscle energy technique (MET). This technique and more is taught on the Muscle energy technique Masterclass and the Advanced soft tissue technique Master-Class at the University of Oxford. John is also the Author of the highly successful book and Amazon No 1 best seller called 'Muscle Energy Techniques, a practical guide for physical therapists'. John has also written 2 more books, one is called 'A Practical Guide to Kinesiology Taping' and comes with a complimentary DVD and the other book is called; 'Vital Glutes, connecting the gait cycle to pain and dysfunction'. These 2 books are available to buy now through my website http://www.johngibbonsbodymaster.co.uk/books/ or from Amazon http://www.amazon.co.uk John now offers Advanced Training in all aspects of Sports Medicine to already qualified therapists in manual therapy to 'Diploma' Level. You need to have attended all of his Physical Therapy Courses before the diploma is awarded. His venue is based at the idylic venue of Oxford University, home of the first four-minute mile by Roger Bannister.