Why grandmasters like Magnus Carlsen and Fabiano Caruana lose weight playing chess - ESPN

You wouldn't think that chess players, who sit for hours on end and extend their arms only from time to time, would struggle with weight loss. But they do. Inside the very real, very bizarre metabolic phenomenon gripping chess.

6,000 calories Robert Sapolsky, who studies stress in primates at Stanford University, says a chess player can burn up to 6,000 calories a day while playing in a tournament, three times what an average person consumes in a day. Apr 27, 2020 ESPN > espn

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