What do you do to cool off?

I am soo freakin mad right now..... Ok heres the story, I absolutely hate the table I sit at lunchtime theres these girl and they make fun of people when theyre sitting right there. So today I needed to finish this book I was reading so i was reading it after i was done eating and then all of a sudden I hear "Who reads at lunch?" I'm like ummm people who need to finish there books? The girl is like "Well umm its stupid, your like some wannabe emo chick, listen we have enough of those already.... THAT PISSED ME OFF SO MUCH!!!! so anyway i need a way to calm down and so could you peeps help me?