Apparently it's because taking two steps back is a longer distance for men than women. Not the center of gravity bit. Still a neat trick though!! Fun to attempt with a group of people, get some good laughs.
>However, according to scientist Professor Brian Ford of Cambridge University, who spoke to The Sun recently, this is not the case.
>"It is true that women have a lower centre of gravity than men, by several centimetres," Professor Ford said.
>"But that has no bearing on this crafty little trick.
>"Men have longer feet than women. Two paces back for a man would be some 60cm, for a woman it's more like 50cm.
>"So to begin with, the man is forced further away from the wall.
>"The man's larger feet mean he is farther away from the wall than the woman, and is thus leaning forward.
>"The woman's legs are closer to the wall, and are thus leaning back."
>According to Professor Ford, it is this that gives women the advantage as men struggle to lift themselves from this precarious position.
RE: Men have higher centre of gravity than women. It's more in their upper body and for women it's in their hips. That’s why most men cannot do this chair lifting experiment.