I drink 3-4 cups every day, including weekends, mainly to compensate for a lack of sleep (bad, I know). On weekends when I actually sleep in, I only have 1-2 cups when I wake up just because coffee tastes so damn good.
In the last office I worked at (very small office), one of the admin assistants pranked me by making the coffee instead of me. She knew what an addict I was/still am so she thought it would be fun to make decaf for a few days to see if I'd notice.
After two days, I didn't have headaches, but I was ridiculously tired, almost conking out at my desk, and I had a terrible case of the shits. I chalked it up to something I ate, until, in my caffeine-free stupor, it occurred to me that there might be something wrong with the office coffee as I was now drinking 5-6 cups a day and getting no benefit.
I called her on it and she had a laugh. Thanks a lot bitch :|

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