Why are the benefits so random?

I'm currently on 3 days of nofap. I've had streaks of 30 days, but for whatever reason, I broke them off. However, right now I stayed up all night because I could not sleep and I had insane focus the day before. What I do not understand is why I am feeling insane focus on just 2 days of nofap when before it took me quite a while to get any type of motivation (7 daysish?). At the same time, why am I feeling so much energy, I've stayed up all night and still do not feel tired, currently 6:30 AM. Before I started this 3 day "streak" I was literally in the biggest motivational rut ever and could not get out no matter what I did.