I think i figured it out how NoFap works (to our benefits and improvement)

Day 20 of NoFap, all girls looks attractive, seriously. And im still holding my urge but I cant stop looking at girls and i look them in the eyes. Even in class or in my way to the college.

Funny thing I have the best day feeling ever this day like I got seriously positive energy from bouldering/exercising and eating my diet even with a boring class I still got energy left like wow.I even dare to say hey to a girl that I barely knew because she’s so attractive and she's saying hi too.

What I learn that day is by holding your urge to masturbate and punish your body to not give it satisfaction you make your sexual instinct more sharp and because your body craving for sexual pleasure your mind goes like “hey, you’re craving for pleasure right? You gotta earn it, say hello to her.” Funny but I learn how to self discipline this way.

And what i learn from watching some video in youtube is that our part of our brain the prefrontal cortex (this thing has to do with self discipline) getting used to holding the urge so we kinda give our willpower a superpower rather than pleasure to PMO.

And that's why we got our confidence also motivation to do things that has benefit to us.
hope this help!