New evidence suggests that rapidly shaking your head after a big hit could indicate a serious brain injury. But why do people do that, anyway?

THIS mind-bending optical illusion will have you shaking your head – literally. At first sight, the freaky image appears just to be made up of vertical black and white lines but there is ...

A VIRAL optical illusion might leave your head spinning – after all, that’s the easiest way to see it. Viewers have been left stunned by the image that conceals a household pet in plain sight… ...

"Give your head a shake!", said Jean Chretien joined a chorus of officials from the northern U.S. neighbour who say Mr. Trump's remarks are no longer a joke and may undermine America's closest ally.