Fun Fact: Caffeine does not “give you energy” it only blocks the adenosine receptors in your brain which tell you that you are tired. When adenosine binds to its receptors, neural activity slows down, and you feel sleepy. Caffeine reduces this. Only glucose gives you energy which is why the “kick” of caffeine is greatly increased by adding sugar.
Are you going to continue with the cyber au? Where it left off with Astrid at Hiccup's job?