How comes that some people are great at “thinking on their feet”, respond in a sharp, witty way during conversations and have no problems communicating complex thoughts from the top of their heads, whereas others need to analyse their thoughts first and seem to have a filter that blocks them from instant reaction? How can people sharpen their minds for other activities, e.g. sports? What tools and methods can we use to keep our minds sharp or even improve mental sharpness? Let’s find out!