Nov 16, - The study says that a man weighing pounds would, at 3 METs, expend approximately calories per minute ( calories per hour) during a stimulation and orgasm session. This level of expenditure is similar to that achieved by walking at a moderate pace (approximately miles per hour). Sep 18, - Has an orgasm (again!). Want to top off your calorie-burning romp in the hay right? Reaching orgasm can burn an additional 60 to calories.