Never done a proper No Fap but I feel a week off every now and then is good to reset your sexual system, both physically and mentally.
I take at least 3 days off before having sex with someone, that way it's not only more exciting but I find you can finish whenever you want. If you've ejaculated recently, I find sometimes you can miss your window to finish by delaying it too much and can't orgasm during the encounter.
The inverse can also be true however, 2 weeks without ejaculating and you might bust in the first few minutes.
The superpower stuff is all bullshit obviously.