The fact that the body is the vessel in shooting, curling and taekwondo is more relevant than this argument suggests. It means that the final determining factors are physical ones, such as speed, control, and precision. In chess, although stamina is involved, it could never be sufficient to win a game. The determining factors are intellectual, such as the mind’s precision in calculating many moves into the future. The brain is an organ: but we do not call anything that tires our brain a sport.