I don't believe in the Zodiac much at all, but I do find the relation of personality types extremely interesting, and in my case, completely accurate. I am a fire sign. I act like one in every discription I can find about it. For instance:
I couldn't think of a better way to describe how I feel from day to day. I express emotion very easily initially even though I never lose control. In fact, in very tense situations, especially in professional environments, I will simply turn any emotion inward until I have control of it and calm down.
To most people around me, I would probably appear very quiet and reserved. I think that comes down to discipline which is something learned and developed over time. I remember my initial lessons as far as discipline in controling emotions came from martial arts training.
Without that and the way I was raised, I would probably blow up fairly easily in tense situations.
In other words, internally, I am raging in the few seconds after an "insult". Externally, people seem to characterize me as being quiet and extremely reserved.
More specifically, Aries:
Of course some of these concepts are overly romanticized, but I meet many people who seem to act just like their sign would indicate. I think there is some truth there in between the myth and that birthdates may have more to do with our initial character than many "scientific" minds would ever be willing to accept.
Bottom line, if it weren't for being able to "release" in the weight room, I would probably have no outlet for it. It helps in that aspect and is very often a gift in terms of initiating action.