… and masturbate as little as possible, it drains the strength.

The rule here is total silence!
We make no pretence at rehabilitation here, we are not priests, we are processors.
A meat packer processes live animals into edible ones, we process dangerous men into harmless ones.
This we accomplish by breaking you!
Breaking you physically, spiritually and here (points to head), strange things happens to the head here.
Put all hope out of your mind… and masturbate as little as possible, it drains the strength.