Anyone who knows me, knows this to be true.
Gemini. You get frustrated and tense when you're angry. You try to maintain some level of composure, but it doesn't necessarily work. The anger centers around your gut, making it quiver and shake. The problem with your anger is that you hardly ever express it. You let it bury itself inside of you.
pulled from Rebel Circus http://www.rebelcircus.com/blog/youll-express-anger-based-zodiac/