TED-Ed: How does caffeine keep us awake? - Hanan Qasim

Caffeine is the world's most widely used drug, consumed in coffee, tea, and other products. It acts as a stimulant by blocking adenosine receptors in the brain, keeping us awake and alert. Caffeine also interacts with dopamine, enhancing mood and potentially offering long-term health benefits. However, it can raise heart rate and blood pressure, and lead to tolerance and withdrawal symptoms. The body adapts by creating more adenosine receptors, requiring more caffeine for the same effect. Despite its benefits, caffeine can have negative side effects and is regulated in sports.

What new insight or understanding did you gain from this video?