Sleep
Caffeine Sleep Buffer Window
A caffeine sleep buffer window is hours between last caffeine and bedtime—often eight to ten—so half-life does not steal melatonin onset.
A caffeine sleep buffer window is the gap between your last caffeine dose and target lights-out—often eight to ten hours for average metabolizers, longer for slow types. The buffer accounts for half-life stacking: a 3 p.
m. dose can still leave meaningful caffeine at 10 p.
m. Pre-workout powders, tea, and chocolate count toward the same clock.
Shrink the buffer one week at a time while tracking latency.
Common questions
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Is eight hours enough buffer for everyone?
It is a starting point, not a law. Slow metabolizers, stacked tea, or pre-workout often need ten to twelve hours—use latency data to adjust.
Related terms
Put Caffeine Sleep Buffer Window into practice
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