I had ds almost a year ago, and since then, I'm having issues with my hips. When I try and walk after I've been sat down, even for a short time, the whole area is stiff, and I end up limping until it loosens up. I also cant walk very fast anymore, or for long distances. I've taken up running, and I just can't get any speed up. Has anyone else suffered with this, and if so, any tips to help it get better, please?