Sina Zarrintan, a neurologist from the Tabriz Medical University inu00a0Iran, says that the logic behind this proposition is based on the factu00a0that the nose and the genitals are both connected to the same part ofu00a0the nervous system that controls certain reflexes – the sympatheticu00a0nervous system.

The researcher points out that swollen and inflamed nasal bloodu00a0vessels, irritated either by an infection or by pollen in the air,u00a0generally lead to blocked nose.Zarrintan reckons that a well-timed ejaculation, during which theu00a0sympathetic nervous system constricts blood vessels across the body,u00a0should soothe the swollen nasal blood vessels and, thereby, free theu00a0airway for normal breathing.