I shouldn't have had coffee in the afternoon
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I shouldn't have had coffee in the afternoon

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daily life

Do you know that the half-life of caffeine is about 5-7 hours? OMG I think I’m doing myself a big trouble AGAIN.. I’m having a tall-size cup of coffee from Luckin, which doesn’t offer decaf option.. I already feel a litter bit jittery, that familiar feeling of having caffeine in my system (I've always been so sensitive to that).

Let’s say I’ll finish it around 3pm. Then after 6 hours, that’s 9pm, half of the caffeine will be gone. But even half of that is still strong enough to disrupt my sleep tonight. And I’m a light sleeper.. I kept thinking about all this after reading a few chapters of Why We Sleep.. And I’m so worried already! Hope I won’t do it again tomorrow. I will not touch coffee of any kind tomorrow!!👊 I hope so..

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