Anger often acts as a pressure gauge for stress you’ve been carrying too long....

https://smoothdecorator.com/the-snap-why-youre-losing-your-cool-and-how-to-actually-stop/

Anger often acts as a pressure gauge for stress you’ve been carrying too long. You might notice it as a tight jaw or shoulders that never seem to relax, even when you’re trying to sleep. We help you identify those triggers before they boil over