How does caffeine keep us awake?
Автор: Tech Explorist
Загружено: 2024-08-24
Просмотров: 60
Описание:
Caffeine helps keep us awake by blocking the action of adenosine, a chemical that makes us feel tired. Here's how it works:
1. Adenosine binds to receptors in the brain, causing drowsiness and relaxation.
2. Caffeine molecules bind to these receptors, blocking adenosine's action.
3. With adenosine blocked, neurotransmitters like dopamine and norepinephrine can flow more freely, increasing alertness and energy.
4. Caffeine also increases the activity of brain regions involved in attention and arousal.
This is why caffeine can help you feel more alert, focused, and awake. However, be mindful of your caffeine intake, as excessive consumption can lead to negative side effects like jitteriness, anxiety, and difficulty sleeping.
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