Over the course of a day, more adenosine binds with A1 receptors, making us feel sleepier as nighttime and sleep approach. When adenosine binds with A1 receptors, it promotes relaxation and sleep. Two of the most important are A1 receptors and A2A receptors. Adenosine has several receptors, each with its own effects. In our brains, receptors can bind with certain molecules to elicit neurological responses. Chemically, caffeine is very similar to adenosine, and this similarity is what allows caffeine to interact with our brains.īefore we can understand how caffeine works, we must first understand adenosine.Īdenosine is an organic compound that has a variety of effects on the human brain and plays an important role in regulating sleep and balancing brain activity and mood. Now that you know all the hidden gems on the Starbucks secret menu, you'll probably be hitting up your local ’bucks sooner rather than later.Caffeine is a psychoactive substance, meaning it affects how your mind works and can alter your mood, consciousness, and cognition.
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