Sex can relieve cramps during their period for some women. Endorphins are released during sexual activity, which can temporarily relieve pain and induce relaxation. This may lessen the intensity of menstrual cramps. The uterus may also contract during an orgasm, speeding up the flow of menstrual blood and lessening cramping. Sex does not permanently relieve period cramps, and in some instances, it may even aggravate them for some people. Pay attention to your body’s signals and follow whatever makes you feel most comfortable.