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I gave up coffee for a week, but I'll never do it again

Do you need coffee to stay awake? Do you need coffee to be productive? A lot of people think coffee is what keeps them going all day, but is that really the case or is it just in their head? I love coffee and have at least a cup a day, but I always wondered what it would be like to not drink coffee. I stopped drinking coffee for an entire week to find out.

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