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coffee and sleep
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Coffee and Sleep: Caffeine Half-Life, Adenosine Rebound, Chronotype Research, and When to Stop Drinking Coffee
Caffeine's half-life is 5 to 7 hours. Here is the science of coffee and sleep: adenosine, chronotypes, and exactly when to have your last cup.
Coffee and Sleep: What the Science Says About Caffeine and Sleep Quality
Caffeine has a half-life of 5 to 6 hours, meaning your afternoon coffee is still active at midnight. Here's what the research shows about caffeine's effects on sleep arch