Anger often acts as a pressure valve for stress you haven't been able to...

https://www.inter-bookmarks.win/anger-usually-signals-pressure-building-beneath-the-surface-if-you-notice-your

Anger often acts as a pressure valve for stress you haven't been able to release. When you carry the weight of work or home life, it shows up as a tight jaw, knotted shoulders, or persistent sleep issues