The body is always available , private and controllable .
It’s more about self control even if in reality it’s self destructive , girls often turn distress inward , the negative emotions taught to be contained and not expressed.
Your own body becomes the safest place to discharge your emotions without “causing troubles” to other people.
It creates an immediate sensation that overdrives the emotions and give a sense of control.
It converts the emotions which are thought to be contained into something physical, something that people help you with in your life , makes you feel validated when the emotional side feels forbidden in the society.
Unlike substances she doesn’t require money and can’t be taken away, it works instantly .
Punching a wall can be a problem when you don’t have complete privacy as it causes noise for example .
It’s feels like the most reliable regulator .