Hello everybody, I am a new user to the site but I have known and read most of Pavel's books and DvD's for a couple of years. I decided to do the remedial squat drills in Strength Stretching DVD. My problem is that I got lower back pain from the squat (no weight). I do not understand how to push my tail up and I think that is the cause of my lower back pain as it pressurizes my spinal disks. Correct me if i'm wrong and please anybody who has experience and understanding with Strength Stretching, please explain to me in layman's terms how to lift the tail in the squat. Thank you very much.