Anakin Skywalker: Master, sir, I heard Yoda talking about midi-chlorians. I've been wondering...what are midi-chlorians?
Qui-Gon Jinn: Midi-chlorians are a microcopic lifeform that reside within all living cells and communicates with the Force.
Anakin Skywalker: They live inside of me?
Qui-Gon Jinn: In your cells, yes. We are symbionts with them-
Anakin Skywalker: Symbionts?
Qui-Gon Jinn: Life forms living together for mutual advantage. Without the midi-chlorians, life could not exist, and we would have no knowledge of the Force. They continually speak to you, telling you the will of the Force. When you learn to quiet your mind, you will hear them speaking to you.
Anakin Skywalker: I don't understand.
Qui-Gon Jinn: With time and training, Annie, you will. You will.
No, Lucas, no! Don't explain it away! The force is magical, an indescribable spiritual energy, intrinsic to everything.
Its like... like... its just like coffee - and the magical energy found within. Magical energy that we *need* to survive. You can't explain that with scientific terms.
Caffeine's stimulative effects hail from both a reduction in the obstruction produced by adenosine and a constraint of neuronal activity. There are four known adenosine receptors; A1 and A2a are the two subtypes that caffeine (theoretically) antagonizes. Adenosine A1 receptors are presynaptic and reside in many areas of the brain, including the cerebral cortex and hippocampus, where they inhibit the release of dopamine, glutamate, and acetylcholine. Caffeine antagonizes benzodiazepines as well, though it is weaker than that of the adenosine receptors. Caffeine can interfere with the effects of concurrently consumed benzodiazepines.