20/09/2013 08:53 BST | Updated 20/09/2013 08:54 BST

10 Kissing Facts (Some Might Make You Think Twice About Locking Lips Again)

Everyone likes a good snog. But it's safe to say most of us are more concerned with the emotions behind kissing than the science.

That's where we come in, with ten interesting facts about lip-locking.

According to the video, lips have 100 times the amount of nerve endings as fingers and a kiss exchanges between 10 million and one billion bacteria. Yuk.

See Also:

How To Kiss: Everything You Need To Know About Locking Lips

17 Sex Facts That Will Make You Laugh, Gasp (Not In A Good Way) And Possibly Vomit