ELI5: How does Caffeine Work?

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Is it a source that is depleted by the body as you use it (like the stamina meter in a game). Or is it an effect that you have to use in a certain time frame (I heard it has a half-life of 12hrs in the body, whatever that means)?

I’m pretty new to drinking coffee. I used to avoid it because it used to give me really bad jitters and anxiety. But that hasn’t affected me recently.

I started drink it to stay awake at work. (I started getting head bobbing exhaustion out of boredom?). I’m a teacher, so I stand but no strenuous physical activity, I feel fine, go to bed fine.

Yesterday I needed a warm drink on a rainy afternoon.. That is when I learned Earl Gray is a caffeinated 😭 I couldn’t sleep til 3AM.

But when I drink it as a pre workout(I lift weights), I literally feel the energy and focus. (It’s a tingly feeling in my cerebrum) But once again, I sleep just fine.

So can someone help me understand how it works.. So I can better understand when to drink it to benefit from the effects 😅 (Idk if it matters but I may have undiagnosed ADD)

Comments

  1. EpidemicRage Avatar

    Just like painkillers stop your body from processing pain (even though you are injured), caffeine stops/prevents your brain from processing the chemicals that make you feel tired.

    You are tired, you just don’t feel it.