That’s one reason why athletes may use it as a stimulant for performance. The overall effect is increased alertness, better thinking, and improved coordination. In addition to the previous reactions, caffeine affects most other parts of your brain. That leads to multiple reactions in your body. That effect, in turn, causes a release of more chemicals called norepinephrine and epinephrine. Second, It also interferes with a reaction that breaks down another chemical called messenger cyclic adenosine monophosphate (cAMP). With the added oxygen, your body can produce energy quickly and more efficiently using carbs and sugar as sources. Your metabolism will also increase because your muscles are going to need a ready source of fuel in order to react. Your body normally releases these chemicals in fight-or-flight situations so that you can respond fast to threats, real or not. That’s why drinking coffee feels good.įirst, these neurotransmitters will cause your heart to beat faster and more forcefully, delivering more oxygen to your muscles. It stimulates the release of dopamine in your brain which is a chemical called a neurotransmitter that controls its pleasure center. How Does Caffeine Affects Your Body?Ĭaffeine targets several areas in your body including your brain, central nervous system (CNS), heart, and muscles. The answer lies not with the caffeine not working but rather its effects on your body that make you feel tired after coffee. Coffee Guides Sleepy After Coffee – Why Does Caffeine Make Me Tired?ĭo you find that you feel even more sleepy after drinking a caffeinated beverage? If that sounds like you, it’s entirely normal.
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