Anecdotally, when I'm playing speed rounds on lichess if there’s any kind of background noise my score drops by 200 point instantly. I find that a good proxy fo

Anecdotally, when I'm playing speed rounds on lichess if there’s any kind of background noise my score drops by 200 point instantly. I find that a good proxy for high-concentration activity and this realization made me change my routine to spend at least half of my office hours when there’s no one around.