🔗 Zarrintan, S "Ejaculation as a potential treatment of nasal congestion in mature males" The Journal of Medical Hypotheses, 71(2), 2008.
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So the author proposes a more...natural method of decongestion. "It is known that sexual arousal in men is followed by penile erection and subsequent ejaculation" (unless of course you've taken too much Viagra or something). The emission phase of ejaculation is under the control of the sympathetic nervous system, which of course has lots of adrenergic receptors. The author reasons that ejaculation will stimulation adrenergic receptors in the refractory period immediately afterward, and stimulation of your adrenergic receptors will give you relief from your cold.