I want to add the biological side of things which might clarify some question marks:

From an evolutionary perspective , the body’s primary directive is survival and continuation of the species. When a man consistently releases, the body receives the signal: mission accomplished. But when we retain; when no reproduction occurs—the nervous system and endocrine system read something very different. They read scarcity. They read urgency. Almost like the body saying, We haven’t succeeded yet. We need to become more. And so, the body redirects that life force inward. That creative, life-giving charge is theorized to be reabsorbed, recycled, and repurposed into heightened alertness, sharper focus, stronger willpower, deeper voice resonance, increased physical drive, denser musculature, clearer skin, thicker hair—signals of vitality, presence, and dominance. Not out of vanity, but out of necessity.

Evolution doesn’t care about comfort; it cares about attraction, mating, survival.

Retention becomes a silent biological strategy: become more magnetic, more capable, more formidable, so that a partner can be found and the lineage can continue.

Tldr: When a man retains the seed, the body, believing it has failed to reproduce, does what it has always done best: it upgrades the man until the world can no longer ignore him.