If caffeine blocks the receptors for Adenison, which is responsible for feeling tired/exhausted, why does caffeine help me feel awake in the morning?

Question

After waking up my adenosine level should be very low and l slowly build up upon the day. So why does my morning coffee make me feel awake if there is no adenison to block?

In: 25

Answer 1

Low not 0. Caffeine make feel like zero.

When wake up, adenosine low, not 0. Must act to get adenosine 0.

Caffeine cover up adenosine, making no sleepy, till caffeine start to wear away, then sleepy come back.

Answer 2

Low not 0. Caffeine make feel like zero.

When wake up, adenosine low, not 0. Must act to get adenosine 0.

Caffeine cover up adenosine, making no sleepy, till caffeine start to wear away, then sleepy come back.