Anybody else experience extreme physical reactions to their emotions if they aren't expressing them?

I used to rage and yell and throw fits when I was very angry or upset. I have stopped doing that and three times this week I got very mad and I started shaking uncontrollably. Then my hands and feet go numb, then arms and legs, then I feel like I'm about to pass out and have to ground myself. This has been going on for at least the past two hours now. When I was raging and expressing my emotions before, this never happened.

Is this normal? Does this happen to anyone else?