It's here that caffeine elicits its most classic effect - helping keep you alert and awake.Ĭaffeine accomplishes this by blocking sleep-promoting receptors in your brain called adenosine receptors.
Once consumed, caffeine is very quickly absorbed and distributed throughout your body, including to your brain. So, when it comes to that gray area between late morning and early evening, how late is too late to drink that afternoon coffee you so desperately need - or even just a soda or iced tea with dinner - without it affecting your sleep? How does caffeine work? And, at the time, it felt like you needed it just as much as the sleep you're not getting now. (Right before bed, for instance.just in case.)īut, you needed that caffeinated pick-me-up to get through the rest of your busy, exhausting day. You know caffeine can keep you awake, and there are the obvious times to avoid it. Or, maybe you're counting the number of hours you might get if you fell asleep right now.
Specifically, the number of hours you're not getting. Instead of counting sheep you're counting hours of sleep.
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