Science has figured out how many calories you burn during sex
As far as doing exercise goes, having sex is probably one of the most enjoyable ways of working out. It's one of the most convenient ones, too. You don't have the hassle of going to the gym, you don't need any special clothes or gear, and - best of all - you can do it all from the comfort of your own bed.
Of course, most of us don't do the dirty primarily as a way of keeping fit (or, at least, I hope we don't), but it turns out that getting your freak on can actually be an excellent method of burning calories.
A recent study from the University of Montreal, which has the catchy title "Energy Expenditure during Sexual Activity in Young Healthy Couples", did some digging into the private lives of 21 heterosexual couples in order to uncover how much energy we use in the bedroom.
As noted by the study, "There is ... a myth which suggests that energy expenditure during sexual activity is between 100 to 300 kcal per session for each individual involved. However, no scientific data has documented this claim." Not to worry, though, because these scientists were on the case to find out how much energy we really use when bumping uglies.
While wearing special "SenseWear" armbands, the couples involved in the study were instructed to go away and, you know, do the deed. To keep it fair across all the pairs involved in the study, the participants were only allowed to perform one "activity" a week for a month, and were instructed not to use any drugs or alcohol that might affect their endurance when doing the horizontal hula.
The average of those four "activities" was then recorded, and the calorific equivalent of the energy burned was calculated.
According to the scientists that observed the results of the experiment (which isn't creepy at all), men burn about 101 calories per 25-minute session - about the equivalent of a large banana - while women work off around 69 calories, which is close to a couple of juicy melon slices.
On average across the study, people burned around 3.6 calories a minute - meaning you'd have to be going for well over an hour if you wanted to work off a Big Mac. And considering the average time a couple spends on this particular exercise is only 5.4 minutes, you'd probably spend more time in the bedroom than out of it if you were relying on sex as your only workout.
Despite this, scientists were still pretty confident that the occasional spot of mattress dancing can actually go a long way to helping you stay fit and healthy:
"These results suggest that sexual activity may potentially be considered, at times, as a significant exercise," the paper concluded - which is pretty good news for those who were looking for an excuse to skip their evening jog today.
Essentially, having sex is never going to keep you in shape the same way that conventional exercise will; but let's be real here - we all know which one we'd rather be doing.