Repeatedly hitting your head can cause physical injuries, such as bruises, cuts, or even concussions. Moreover, it's essential to consider the potential long-term effects on your mental and emotional well-being.
As for its impact on IQ specifically, there is no direct evidence to suggest that occasional incidents of banging your head against the wall would decrease your IQ permanently. However, if you engage in this behavior frequently or it leads to head injuries, it could have adverse effects on your cognitive abilities and overall health.
Anger can be a powerful emotion, and it's essential to find healthier ways to cope with it. If you find yourself struggling to manage anger or resorting to harmful behaviors, consider seeking support from a mental health professional. They can provide you with coping strategies and techniques to deal with anger in a safe and constructive manner.
Remember, taking care of your mental and physical health is vital, and seeking help when needed is a sign of strength, not weakness.