3 ms·
~24 hours? Interesting. I've used coffee as a sleep aid: when I really need to go to sleep at X in order to get 8 hours before some important event, drinking
by randallsquared 19y ago
~24 hours? Interesting. I've used coffee as a sleep aid: when I really need to go to sleep at X in order to get 8 hours before some important event, drinking coffee at 4 hours before X seems to help me sleep, due to the huge crash between 3 and 4 hours after the caffeine hits.
- iamelgringo 19y agoAt least that's whay my Doc told me last time I saw him. Noodling around online, it seems that the half-life of caffeine can vary anywhere from 2-3 hours to 100 hours depending on the person, their metabolism and if they smoke or not.