While doing a leg split, left foot forward in the sand,I went too far and heard a pop. Had pain in left butt, and all the way down back of leg to toes. It hurt to walk.I went for a gentle swim which was ok.Now 2 weeks later, it hurts some in left butt,hip and back of thigh to knee.I previously hurt left sciata which was okay til now.I can use left with small amount pain. It hurts to sit awhile on it.