If caffeine works by blocking the receptors that make you feel tired, why does too much caffeine cause you to feel “wired”?

Question

Shouldn’t you just max out at feeling perfectly alert/rested?

In: Biology

Answer 1

Have you ever been physically tired but not mentally.

This is the opposite. It helps by telling your body it isnt time to sleep yet because the coffee made your body clock move back even though it isnt actually recovered.

Coffee is tricking your body into thinking its rested when its not, while it may actually still need a lot of sleep.