Hangover without hangover

I only get 2 drinks last night : virgin ceasar and Guru (a organic/bio/vegan energy drink, it makes you feel less guilty to drink than other energy drinks, lol) but it’s 5h30AM, i’m very thirsty, my heart is racing, same as a hangover but without the alcohol! It’s really weird to have this feeling because usually the guilt feeling is there too but there is no reason to be because I remember the night and no alcohol was ingest. I guess water is still something I need to drink more!

In a lot of energy drinks there is caffeine and guarana in it. They can increase your heartbeat and make you thirsty as well.