I found a dead male jogger off the side of the road down an embankment some years ago. I went down the embankment after hollered for him and got no response, so I went down carefully as to disturb as little as possible, he had no pulse. Later I found out he was jogger from the area and he had a heart attack, probably either sat down on the guardrail when he knew something was wrong then died and fell over backwards down the embankment, or possibly collapsed while running and stumbled over the guardrail and down.