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Jul 30, 2014 at 16:54 comment added Nick Stauner Ha! Yeah, you should be confused! Think instead of how long it takes for only a negligible amount of caffeine to remain. In 24 hours, it's about 6.25%. That's negligible enough in my book, but technically, 48 hours later, one would predict from the half-life alone that about 0.4% is still there! Eventually the amount remaining becomes undetectable, but does it ever really leave our systems completely? Who knows! (But yeah, it probably does...I think...) Anyway, yes, that's my take on coffee drinking: I'd give myself at least 12 hours to get rid of 75% of it before trying to sleep again.
Jul 30, 2014 at 14:16 comment added DetectiveShmee @NickStauner Does that mean it is safest to have coffee just in the morning and not any later? I looked up at half life of coffee (it's my first time facing that term) and now I'm confused how much time coffee needs to get out of system completely ?
Jul 29, 2014 at 17:47 comment added Nick Stauner Extra tip about caffeine: IIRC, the half-life is 6 hours, so avoid drinking it late in the day. Twelve hours later, 25% of what you drank is still active (even if it doesn't feel like it)!
Jul 29, 2014 at 17:29 history edited David Hobson CC BY-SA 3.0
spelling mistake
Jul 29, 2014 at 15:43 history edited David Hobson CC BY-SA 3.0
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Jul 29, 2014 at 15:31 comment added David Hobson Glad it helped! I really should have been getting ready for bed when I took the time to look up links and write that answer. Now I feel better about taking the time with the positive feedback ;-)
Jul 29, 2014 at 13:33 vote accept DetectiveShmee
Jul 29, 2014 at 13:33 comment added DetectiveShmee Great advice :) Some things you mentioned never crossed my mind. For example, listening to relaxing music before going to bed or meditating. I will try this and darkening my room at the right time. I guess my lifestyle really affected my sleep, even tho it all seamed like harmless little things "everyone does". Thank you :)
Jul 29, 2014 at 13:29 vote accept DetectiveShmee
Jul 29, 2014 at 13:33
Jul 29, 2014 at 4:36 history answered David Hobson CC BY-SA 3.0