I recall having similar thoughts while watching the Lord of the Rings movies. I recollect Aragorn ending up unconscious at least once per film, one such instance being the result of an event that makes me quote Butch Cassidy and the Sundance Kid every time I see it ("I can't swim!" "Are you crazy? The fall will probably kill you!").

I do not just now remember whether he gets knocked on the head quite that often in Tolkien's novel, though I suspect not. OTOH, novel!Aragorn probably sensibly wore a helmet.