Sleep
Caffeine Timing for Night Shifts
Caffeine timing for night shifts stops coffee six to eight hours before main sleep—front-loaded on shift—so day sleep keeps depth and faster onset.
Caffeine timing for night shifts front-loads coffee early in the wake period and stops roughly six to eight hours before your main sleep block—even if that cutoff falls mid-shift for some rotations. Late caffeine steals slow-wave sleep and lengthens daytime onset.
Smaller doses beat repeated energy drinks that spike and crash. Pair with hydration and protein, not sugar alone.
Ohga warns on caffeine tags when night workers log espresso after 3 a. m.
then report shallow day sleep.
Common questions
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Can night shift workers drink coffee all night?
Early-shift coffee is fine for alertness; stop well before your planned sleep. If you work until 7 a.m. and sleep at 8 a.m., last caffeine may need to be around midnight—not at clock-out.
Related terms
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