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    Do you follow the rule of no coffee past midday?

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    • oliveoilO
      oliveoil
      last edited by

      Dr. Andrew Huberman discusses this in his podcast. He suggests that caffeine should be avoided 8 to 12 hours before bedtime. According to him, drinking a cup of coffee at 2 PM is equivalent to consuming 10% of a cup right before bed. He claims that even if you feel good when you sleep, you still may not reach the REM phases as effectively.

      The New SunT 1 Reply Last reply Reply Quote 0
      • The New SunT
        The New Sun @oliveoil
        last edited by

        @oliveoil I believe it's entirely dependent on liver function, a healthy, robust liver should be able to metabolize most of the caffeine in about 10 minutes. There are things which inhibit and increase caffeine metabolism as well.

        For example, a smoker will have a higher caffeine metabolism due to the acceleration in its demethylation (it also increases xanthine oxidase activity).

        yerragY 1 Reply Last reply Reply Quote 0
        • yerragY
          yerrag @The New Sun
          last edited by

          @The-New-Sun

          Spot on!

          Caffeine and the health of the liver in detoxifying (for lack of a better word) caffeine plays s large role in having good sleep, yet there are other factors as well, such as having a stable supply of energy to power sleep, as well a state of calm enabled by GABA and the absence of serotonin in our brsin that disturbs our mental well-being and sleep.

          Temporal thinking is the faculty that’s
          engaged by an enriched environment, but it’s
          wrong to call it “thinking,” because it’s simply
          the way organisms exist... - Ray Peat Nov 2017 Newsletter

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          • M
            Mulloch94
            last edited by

            No, not midday. I won't have any coffee after 5 pm. The reason is caffeine's half-life of roughly 6 hours. I want my caffeine concentrations to be rather low towards bedtime. But that can be achieved much later than midday. I still have a cup of coffee around 3:30-4:00 in the afternoon.

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            • 02hellandback0
              02hellandback
              last edited by

              I used to drink two cups a day, in the morning and after lunch. But after my son was born I started drinking another cup after work, sometimes between 5-6 PM to help me stay up a bit for evenings to help my wife out with the baby.

              I found that I can still sleep well enough even with that late coffee, so sometimes I'll make a cup if I feel like it. I think it really varies from person to person though and I just generally go by feel, if I have work the next day and need to get up early I might skip out on it but if it's the weekend why not?

              My morning and evening cups are usually with milk while my lunch coffees are usually espresso with a bit of sugar. If that makes a difference.

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