What are the benefits to NoFap?

On Day 2. I'm not really addicted to porn at all. (Use my imagination/girl sending pics a lot). I was wondering what the benefits are to someone like me who is just doing it to get the benefits that everyone talks about. Like people always say they have more confidence etc. Also, is it against the rules to fap if a girl sends pics and it's not porn? Sorry I just have a lot of questions haha