Via this assay, Both men and women should try to get up on a chair in their hands, after walk three steps back and lean forward 90 degrees with the head mounted on a wall. Men constantly fail, while women do it without difficulty. Some say women do because they lower their center of gravity, But this is not true. According to the University of Cambridge scientist, Brian Ford, the explanation is the distance between the wall and the legs of the person. Men having larger feet have a greater distance from the wall, and therefore can not balance.