Drinking coffee for studying is incredibly popular for many students, fueling many a late-night study session in the library.
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How sleepy you feel at any given moment is basically a combination of where you are in your circadian cycle, plus how much “sleep signal” chemical is in your brain.
Caffeine works by temporarily knocking all of the sleep signal (adenosine) off its receptor sites in the brain. That tricks the brain into thinking you’ve just woken from a refreshing sleep, giving you that nice feeling of alertness.
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Does drinking coffee extend your life?

A new study shows that coffee’s potential health benefits persist, even if you add a bit of sugar to your java.
Does drinking coffee extend your life? According to findings published in Annals of Internal Medicine on May 31, 2022, sweetened coffee drinkers who downed an average 1.5 to 3.5 cups a day were 29% to 31% less likely to die during an average seven-year follow-up than non-coffee drinkers.


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