After ejaculation, dopamine decreases and prolactin increases, creating states of quietude and calm.

“and we know that after after ejaculation after orgasm there's a dramatic decrease in dopamine and a huge increase in prolactin what does that do prolactin and dopamine are essentially antagonistic to one another it creates states of quiessence calm it's thought to facilitate pair bonding by keeping mates near one another smelling one another sharing pheromones in fact there's something called the coolage effect we could talk about the sort of classic coolage effect there these you know effects that um have to do with the inverse relationship between dopamine and prolactin”