Why Does Coffee Make Me Tired? Nutritionists Have the Answer

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Are you an avid coffee drinker like 83% of adults in the U.S. who collectively consume 587 million cups per day? If so, it's probably hard to imagine a day without the world's most popular beverage. It's like every ideal morning starts with a cup—whether you like it steaming hot or iced, one sip gives you that fix you need. But caffeine can do some pretty crazy things to your body. In some cases, it can do the opposite of boosting your energy. If you're scratching your head and wondering why coffee makes you tired, this one's for you.

We tapped experts to solve this mind-boggling mystery of coffee. Registered dietician and author of The Diet Detox Brooke Alpert, along with the founder of Reserveage Nutrition and author of New York Times best-selling book Glow 15 Naomi Whittel, shared the reasons coffee could be making you feel sluggish, fatigued, and tired.