Limiting Caffeine After 2 PM — #8 in Top 10 Best Sleep Improvement Techniques | Top10Grid
#8
Limiting Caffeine After 2 PM
Caffeine has a half-life of 5-6 hours, meaning a 3 PM coffee still has half its stimulant effect at 9 PM. Cutting caffeine after early afternoon significantly improves both sleep quality and total sleep time.
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