[nsouth]

So how do you explain the ability for a man to delay orgasm as long as desired through tantric sex? The technique is to draw energy upwards from the genitals so as not to reach an energetic "critical mass" and trigger the "usual reflex".

However if you were to mean that energy flows are controlled by the mind, then you'd be bang on. "Where the mind goes, the chi flows" as they say.

[galdosdi]

Because sexual response is controlled by the brain.

If I imagine myself in a calming forest, I can feel calmer and my heart rate may go down. Does that mean I magically transported my soul to a forest or some other such superstition?

[openfuture]

Yes.

Or at least some cultures { think of it / use language } in that way

[nsouth]

It's nothing to do with reducing your arousal, but redirecting the nervous energy away from the genitals.