Hope your are feeling much calmer now. I'm normally a pretty laid back sort of person (some say so far back I'm horizontal

) but if/when the adrenaline does kick in I react quite badly to it - in the odd situation where I KNOW I am right and I won't back down regardless of how the other person is reacting. After one of those rare moments I really have the shakes, quite badly sometimes and it takes a while to settle. To imagine you have this reaction to things a lot of the time (even when a happy event can set it off) I really feel for you as it can be quite frightening.
Take care and hope you have a more relaxing sleep tonight
Jan