Have a look at this:
In 2004, winner Rustam Kasimdzhanov walked away from the six-game world championship having lost 17 pounds. In October 2018, Polar, a U.S.-based company that tracks heart rates, monitored chess players during a tournament and found that 21-year-old Russian grandmaster Mikhail Antipov had burned 560 calories in two hours of sitting and playing chess — or roughly what Roger Federer would burn in an hour of singles tennis.
Why grandmasters like Magnus Carlsen and Fabiano Caruana lose weight playing chess.
It seems that chess can help with burning calories. The brain, it seems, actually does some calorie-burning efforts.
I would love to think more on the matter, but I’m afraid I might lose some weight by doing so!
