When I perform reverse hypers, I am getting a ripping pain in my back exactly above my butt crack below my spinal erectors (no other way to describe its location). When I have my legs fully extended (in line with my torso), and I start to lower my legs I start to feel the pain. I just changed my method on the reverse hypers to the swing method so I can handle more weight, but with even no weight I still feel the pain. I do not suffer from any pain on squats or deadlifts. If any of you guys may be able to tell me what this pain is, or whether it is anything I should be concerned with, pleas let me know!