This has always been an embarrassing issue for me: Lose track of the lecture. Tr... | Hacker News

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		havblue on Aug 11, 2022 \| parent \| context \| favorite \| on: Why thinking hard makes us feel tired This has always been an embarrassing issue for me: Lose track of the lecture. Try really hard to concentrate and catch up. Nod off.

throwaway81523 on Aug 11, 2022 [–]

I suspect that nodding off in meetings or lectures, a lot of time, is caused by too much CO2 in the air, caused by poor ventilation and a room full of exhaling people.

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