In the summer I tripped on the flat Wallside path on the Harewood Estate, fell flat and chipped a front tooth. Yesterday I did the same on a smooth path while recceing the Burley Moor Run, and battered my left shoulder, elbow, knee and hip. I checked - there was NOTHING there to trip over bigger than pine needles. Before I decide to accept that I'm just not safe to be out, I'd appreciate suggestions as to what I may be doing wrong, and what to do about it. Do I need consciously to lift my feet higher? Could a physio help? Has anyone else had this problem? And if this happens on the flat, should I even be contemplating running on rougher ground?