Question

How does caffeine affect your synapse?

Answer 1

It blocks receptors.

Explanation:

Adenosine, for example, is responsible for our feelings of being tiredness and sleepy. Caffeine, is similar in structure with adenosine, hence it blocks the receptors for adenosine. That's why, if there is adenosine, and you would drink coffee, you'll not feel sleepy, because it actually blocks out adenosine from the receptors so you won't feel sleepy...