Yeah, that's why it's not good to get used to caffeine or if you don't get enough, your body isn't used to running without it. Fortunately for me, I don't get that stuff so I can just keep drinking Monster Energy and I don't feel a thing. Meanwhile some drink a can and they start hearing things.
i used to like pepsi more, but then my mom only started buying coke because thats what she liked and thats all i had to drink. now i dont like pepsi that much and for some reason i can really tell the difference.