Andrew Huberman· PhD
And afterward there's a return to increased parasympathetic activation. And we don't know for sure why that happens, but it's thought that in species that pair bond, humans generally pair bond, not always, there the return to more parasympathetic activation after orgasm and ejaculation is thought to increase the exchange of pheromonal orders, odors, excuse me, and to increase pillow talk and pair bonding of different kinds, okay?