03-04-2012, 12:20 AM
For some reason, whenever I do a move that involves laying on my back and lifting my butt up, I get this most god-awful pain going down the back of my right thigh. It's not there when I do anything else -- just that one move. It feels like the muscle is being stretched too much or something, but this doesn't happen when I do anything else that involves stretching/using my thigh muscles. What could be the problem?