Ah, I see. It’s been a long time since I’ve tried to moderate my consumption, but when I did (and when friends have done so), the metric was “total consumption per day”, so I don’t have much evidence either way whether the distribution across time matters. The preferred way to reduce was to cut out non-morning intake, then to reduce late-morning intake, then to taper and remove initial-morning intake. This can be done by brewing a mixed decaf/caf blend, and making it weaker (more decaf) after your first.
https://www.ncbi.nlm.nih.gov/books/NBK223808/ gives some data about metabolic clearing rate of caffeine (1.5 to 9.5 hour half-life, not very helpful, but if you’re at the midpoint of that (5.5 hours to clear half of the caffeine in your bloodstream), that implies your afternoon dose is on top of significant remnants of the morning, and “total daily dose” matters more than “max ingestion at any one time”.
Ah, I see. It’s been a long time since I’ve tried to moderate my consumption, but when I did (and when friends have done so), the metric was “total consumption per day”, so I don’t have much evidence either way whether the distribution across time matters. The preferred way to reduce was to cut out non-morning intake, then to reduce late-morning intake, then to taper and remove initial-morning intake. This can be done by brewing a mixed decaf/caf blend, and making it weaker (more decaf) after your first.
https://www.ncbi.nlm.nih.gov/books/NBK223808/ gives some data about metabolic clearing rate of caffeine (1.5 to 9.5 hour half-life, not very helpful, but if you’re at the midpoint of that (5.5 hours to clear half of the caffeine in your bloodstream), that implies your afternoon dose is on top of significant remnants of the morning, and “total daily dose” matters more than “max ingestion at any one time”.