Can sex really replace working out in the gym?

Many men will brag about marathon sexual experiences, after which they are exhausted, and will compare such experiences to working out in the gym. But how many calories do we really spend on sex?

Recent studies have shown that the average sex lasts six minutes, burning approximately 21 calories. If you're lucky and your sex lasts half an hour, you'll burn 80 to 100 calories, writes Cosmopolitan.

Although these are not negligible numbers, it is much less than what many scientists have been leading us to believe for years.

But even though sex is not as effective as the average exercise, it still has its benefits because it improves mood, makes sleep better, and keeps the skin looking youthful since it improves blood circulation.