Why Some People Feel Tired After Sex

Andrew Zaeh for Bustle

If you've ever had fantastic sex, the type of sex riddled in orgasms, there's a chance that afterward you might feel tired. Or, maybe you had one hell of an orgasm, and feel ready to go for another round — or three or four — instead. Honestly, it could go one way or the other. While there are those who feel totally wiped out after sex and ready for a nap, there are also those who feel like they're able to take on the world after sex.

"Not everyone feels tired after sex; some people do and others don't," Dr. Dawn Michael, certified clinical sexologist, sexuality counselor, and author of My Husband Won't Have Sex With Me, tells Bustle. "There are hormones that are released after an orgasm such as oxytocin and dopamine. Women tend to release more dopamine than men do and this can actually wake you rather then make you feel sleepy."

But for those who do feel like they need to go to sleep right after sex, there are a few reasons as to what this might be there case, from your brain pretty much shutting off after an orgasm to oxytocin's calming affect on your body.