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The primary reason why coffee makes you sleepy sometimes is likely because it’s making you dehydrated. Coffee is a diuretic. In other words, it makes you need to urinate. Drinking it to stay awake can quickly lead to a vicious dehydrating cycle that actually makes you more tired. The cycle goes like this:


Why does caffeine make me sleepy? Coffee is traditionally thought of as a pick-me-up, but many people find that it can actually make them feel tired. Caffeine seems to affect people in different ways, but overall there are 3 main reasons this happens. 1 - It messes with your adrenal glands.


Some people feel tired after one cup of coffee, and others can drink several cups a day and feel fine. Here’s why it’s making you tired and what you can do. ... This added sugar may come in ...


As a nervous system stimulant, caffeine in coffee, soft drinks and chocolate can make you feel as if someone pressed a "fast-forward" button on your body. While caffeine has many effects, one that is not common is causing you to feel drowsy. However, when caffeine wears off, you may notice the ...


Thanks for the info. For me, within’ 20 minutes after drinking a Starbucks iced coffee with almond milk makes my eyes heavy and I become very sleepy. I usually feel like a good nap, and when I do it’s usually a long good nap. Energy drinks that are sugar free and tea seem to not effect me in the same way, though still at times making me tired.


Of course you may have the question “why does coffee make me sleepy instead of awake? Or to say, why does caffeine not affect me? #1 Drinking Too Muck Coffee Will Dehydrate You. The impact made you feel energetic of coffee disappears in a short time, so you’re eager to have one more cup of coffee.


Here’s Why You Sometimes Feel So Tired After Drinking Coffee Coffee- it’s the fuel that runs most of our lives. Even the smell of it in the morning can miraculously turn you on- for work.


Why Does Caffeine Make Me Tired? This link opens in a new window ... Also consider the fact that no amount of coffee or caffeine is going to make up for tons of lost sleep or the energy-sapping ...


Black coffee (not espresso but strong coffee nonetheless) hits me after about 30 mins. Then I feel excessively sleepy and sleep for about 35–60 mins. If I don't take this nap, I keep feeling drowsy all the time. I struggle to keep my eyes open in the gym post coffee. I am a scientist and I know for certain that coffee is not a stimulant for me.


This method doesn’t work for everyone, however, and some people may find themselves wondering, why does coffee make me tired? 3 Reasons Why Coffee Makes You Tired. Coffee is traditionally a method of boosting energy, but for many people, it can make them tired.