How long before bed should I stop drinking caffeine?

Research suggests stopping caffeine consumption 6-8 hours before bedtime for coffee and energy drinks, 4-6 hours for tea, and 2-4 hours for soda. This allows your body enough time to metabolize the caffeine and prevent sleep disruption.

Why does caffeine affect sleep?

Caffeine blocks adenosine receptors in your brain, which normally help you feel sleepy. With a half-life of 5-7 hours, caffeine can remain active in your system long after consumption, making it harder to fall asleep and reducing sleep quality.

Does decaf coffee affect sleep?

Decaf coffee contains small amounts of caffeine (2-5mg per cup compared to 80-100mg in regular coffee). While significantly less impactful, sensitive individuals might still experience mild sleep disruption if consumed very close to bedtime.

Is the Caffeine Curfew calculator free to use?

Yes, the Caffeine Curfew calculator is completely free to use. We provide this as a public service to help people improve their sleep quality through better caffeine management.

Caffeine Cutoff Calculator: Find Your Sleep Time

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