Most women only want to have sex for this amount of time

While there are many wild misconceptions about sex and preferences, there's one that seems to stick around.  

If you're a female, you've probably heard the phrase "Girl, I'm gonna give it to you all night long." And if you're a guy, you've probably had some insecurities about how long you can last. 

Funnily enough, most women don't want sex to last much more than 10 - 20 minutes, not including foreplay. 

It goes without saying that this is a generalized statement, and obviously open and honest communication is the best way to find out how long you and your partner like to last.