Asked by SelinaBiology 🌱

How does caffeine keep me awake?

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Usama Asari

Physics and Maths Tutor. Helping students help themselves.

A chemical produced by the brain called adenosine binds to adenosibe receptors in the brain. This binding slows down nerve cell activity causing drowsiness. Caffeine is similar to adenosine and can bind to the adenosine receptor. Instead of slowing down nerve activity it speeds it up as the caffeine is taking up all the receptors.

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