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

https://astro-wiki.win/index.php/Is_Anger_Management_Worth_It_If_I%E2%80%99ve_Never_Been_Violent%3F

Anger usually acts as a pressure valve for stress you haven't been able to release. When you carry that weight, it shows up as a tight jaw, aching shoulders, or restless sleep