How Long Does Caffeine Stay in Your System? (And When to Stop Before Bed)
Caffeine’s half-life is about 5 hours, so half your 3 PM coffee is still in your body at 8 PM. A sleep study found caffeine 6 hours before bed still cut sleep by over an hour.
Caffeine’s half-life is about 5 hours, so half your 3 PM coffee is still in your body at 8 PM. A sleep study found caffeine 6 hours before bed still cut sleep by over an hour.