Caffeine and Sleep
Caffeine, a psychoactive stimulant, can linger in your system longer than you might think, impacting your sleep quality. With a half-life of 5 to 6 hours, even a cup of coffee consumed in the afternoon can affect your ability to fall asleep at night. Understanding how caffeine works and its hidden consequences is crucial for anyone looking to improve their sleep health.In this clip
From this podcast

Tim Ferriss Show
Insights from Dr. Matthew Walker, Adam Grant/Atul Gawande, Diana Chapman, & Rich Roll/David Goggins
Related Questions
Is this wording correct? "The data shows that caffeine has a 5-6 hour half-life. So if you drink a coffee at 10am, 6 hours later you’ll have 50% of it left in your body. 6 hours after that, at 10pm, you’ll have 25% of it left in your body."
How long does caffeine affect your sleep?
How long does caffeine affect sleep?