Thanks to evolution by natural selection, we have many vestigial body traits that once helped our ancestors but no longer serve any purpose for us. The above video by Vox gives a rundown of physical traits that can be traced back to our early ape-like predecessors. It's a fun reminder that your body is, as host and producer Joss Fong says, a living, breathing "museum of natural history." 

Header image courtesy of iStock. 

[h/t Vox]