Comment on Ask HN: Relation Coffee VS SleepComments−littledude14ythe half-life of caffeine is about 5hrs and there's around 260mg in a 12oz coffee. you'd probably want to stop drinking after the first few hours of your day so it's mostly out of your system by the time you go to sleep.−damoncali14yInteresting. Do you happen to know why caffeine withdrawal symptoms tend to kick in after (for me) about 36 hours?
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the half-life of caffeine is about 5hrs and there's around 260mg in a 12oz coffee. you'd probably want to stop drinking after the first few hours of your day so it's mostly out of your system by the time you go to sleep.
Interesting. Do you happen to know why caffeine withdrawal symptoms tend to kick in after (for me) about 36 hours?