Does this mean that after 8 hours the caffeine is still in my system, acting hal... | Hacker News

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		SwiftyBug on Jan 17, 2020 \| parent \| context \| favorite \| on: Ask HN: Not resting fully because can't sleep long... Does this mean that after 8 hours the caffeine is still in my system, acting half as strongly as it was at the time of ingestion?

josephdviviano on Jan 18, 2020 [–]

Well, there's half as much, I don't know enough to say there is a linear relationship between caffeine concentration and it's psychological effects.

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