Dr. Michael Breus aka The Sleep Doctor: How to Optimize Sleep & Productivity, Sleep Chronotypes, The One Trick For Circadian Rhythm Mastery and More
The Dream Bigger Podcast
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The Effects of Caffeine on Sleep
There are different caffeine sensitivities that people have, and this has a lot to do with something called your P450 pathway. MRI data looking at people's brains shows that if you've been using caffeine on a daily basis for more than about two to three years, your brain actually requires it to function. Some people don't get addicted to caffeine, but I think they just get so their body gets so adapted to it that it requires more and more caffeine to get any type of effect.
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