[gisanokharu]

the half-life thing is what gets most people. they stop at 2pm thinking they are safe but its 5-6 hours. had a coworker who quit coffee at noon and still could not sleep, did not connect it until we traced back

[jere]

Totally. Stopping at a specific time is a good rule of thumb, but you can obviously compensate for one half life by just consuming twice as much at the start.

And the surprising thing too for me: how low the threshold is where it can impact your sleep.