The Effects of Kaffine on Sleep

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Kafine has a half life of around five to six hours, so after five to six hours, 50% of that kaffine is still in your system.
If you have a cup of coffee at midday, a quarter of that kaffine is still in your brain at midnight, which would be the equivalent of to tuckin yourself into bed, and just before you turn the light out, you swig a quarter of a cup of star bocks, and you hope for a good night of sleep.
And, you know, it's probably, it's probably unlikely to happen in that way.

Renowned sleep scientist Matthew Walker discusses everything you need to know about what a better night’s sleep can do for your life, and how to prioritize and perfect the way you sleep. Walker breaks down how to identify when you need more sleep, how to deal with insomnia, the best devices to track your sleep, and some unconventional sleep hygiene tips, including why it’s never a good idea to count sheep. Walker is a Professor of Neuroscience and Psychology at the University of California-Berkeley, and is also the founder and director of the Center for Human Sleep Science. He has published over 100 scientific research studies on the impact of sleep on human brain function, and he is the author of the 2017 book, Why We Sleep: Unlocking the Power of Sleep and Dreams. --

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