If

[Angrboda]

Try yourself to perforate your body with a knife or something else and then tell your brain to not let you feel any pain and to close the cut as soon as you take the knife out.

You've been corrected on this once already. The article you quote even explains how there are scars that result from the practice. But you didn't listen, did you? It goes in one ear and out the other. Who would trust such a poor learner to possess any kind of wisdom? You are a wishful thinker who believes what you want to believe, even when it's pointed out to you in black and white how it's not true. You are worthless for any kind of discernment, yogic or otherwise.
The article that you linked to clearly says, "For weeks after the festival I see local guys with fresh scars! The scar tissue is often quite obvious especially on those who have been participating for many years."

Actually is you that doesn't listen.
If you go back many month ago when we were talking about this subject i already explained why.
The people who participate in these festivals are normal people who during the year most of them eat meat and don't really do any meditation.
They follow Hinduism which involve a bit of chanting mantras and some prayers.
Once a year they want to prove themselves that God is with them so what they do?
3 weeks before the festival they only eat vegetarian food in order to clean up their body-mind from impurities and at the same time they chant mantras in the temples and sex is also off during that time in order to focus on the divinity within.
When the time come their mind is therefore under control and their consciousness take over but here we got to understand that not everybody reach an high stage of consciousness so in some of them the mind still has some influence over them and that is why some of them feel a bit of pain and some scars are still visible while other feel no pain and no scars are visible so again you show that you haven't got the full picture of what really happen.

a) You have no way of knowing any of this. It's just a bunch of made-up garbage.
b) It's all just a smokescreen for the fact that, once again, you have no evidence to show for your claims.
c) The evidence which we do have is contrary to your claim.

Your "explanation" is worthless.