the most physically and even worse MENTALLY demanding sports are cycling, running, swimming... etc. the entire purpose of these sports is to put yourself through more pain than anyone else you are competing against. a perfect soccer game or football game would be to leave not being fatigued or injured and by winning by an infinite amount of points while giving up none. basically, the perfect game of either of these games (which is what all teams strive for) would feel effortless. the perfect bike race or running race would be to put yourself through so much pain that your heart explodes right when you cross the finish line and you die. that kind of puts it in perspective... no game can compete in physical or mental anguish against the Tour de France in cycling or an ultramarathon in running. its just not possible.