And anyway, Buddhism is an ascetic religion that revolves around self-deprivation. That sacrificial edge, coupled with the mantra of meditation reeks of Ni Fi. I'd bet bundles that most of those monks were already intelligent INTJs, INFPs, and INFJs.
So when you're bitten by a radioactive INXX monk zombie, your intelligence is likely to increase manifold. It's just intuitive, bro.