It's a very strange correlation. Recently, I went 100 days without masturbating, and between this final period of 100 days and the days when I masturbated frequently, if you asked me which period I would prefer to be in, I would definitely say I would prefer to be in the 100 days of NoFap because of the 'improvement.' However, it's all an illusion because I continued to suffer from stuttering in the same way! Whether I was masturbating or not, the difference wasn't enough to change my way of thinking about stuttering.