Ah, the mythical coregasm. As the name implies, this is a type of orgasm that occurs while, well, working out your core. It happens because of the "squeezing of the pelvic floor muscles," which "triggers nerve impulses." In other words, a coregasm sensation likely stems from pelvic floor contractions, and therefore helps someone unintentionally orgasm. Professional medical experts aren't clear about whether this is a totally legit experience or not, but hey, to each their own if you start to feel a little tingly after your daily dose of sit-ups.