Jun 1, - Sex as exercise. During sexual intercourse, a man's heart rate rarely gets above beats a minute, and his systolic blood pressure (the higher number, recorded when the heart is pumping blood) nearly always stays under All in all, average sexual activity ranks as mild to moderate in terms of exercise intensity. Aug 15, - Would/have you used a fitness tracker to monitor your own sex life? ➤ Wore my Fitbit heart rate monitor during sex. Beautiful [Reddit via.