At this tender age I will give you honest advice
Please don't masturbate at all
Inappropriate masturbations can leads to trauma as well as curvature
Long term it can leads to premature ejaculation as well
Next Steps
if you have become addicted to it
don't watch erotic movies
even if you want to do it
once fortnightly with gentle hand
Health Tips
you will have Nocturnal emissions if you don't masturbate which is quite normal