LIFESTYLE

30/01/2015 05:34 GMT | Updated 30/01/2015 05:59 GMT

10 Unsolved Mysteries of the Human Body

AllTime10s

SEE ALSO:
These Facts About Our Bodies Are Both Gross And Fascinating
10 Facts About The Female Body Including What Gives You A Yeast Infection

Ever wondered why you're left handed? Or confused by why we yawn?

Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements. Learn more