Why does masturbation cause stutter?

Why does masturbation cause stutter? I always used to think the stutter cure that NoFap seems to give is 'psychological' and somehow related to your confidence. Now I know I was wrong. I'd stutter badly when reading a book alone if I binge masturbate like usual. However, just in 3-4 days into a nofap streak I stop stuttering almost completely. I don't know why but I have recorded this dozens of times. I can suddenly say the words that I could not after binging.