What happens when you drink caffeine while dehydrated?

Updated 7/29/2019.

Have you ever wondered what happens when you use coffee or energy drinks to quench your thirst? Have you ever noticed sometimes an energy drink won’t affect you the same way? Or that, on some days, it feels like your standard cup of coffee just isn’t working? Thes questions are all related through the 5 Levels of Fatigue.

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