An irrefutable study of ice hockey players, which can safely be generalised to the whole population, reveals that the larger the width-to-height ratio of an individual’s face, the more aggressive they are. By way of explanation, it is suggested that
In general, men's faces tend to have a larger width-to-height ratio than women's. This physical characteristic has been linked to higher levels of testosterone, which in turn is linked to aggressive behaviour.
This, of course, suggests that Sophie-Ellis Bextor must have very high levels of testosterone and aggression. And Michael Schumacher, (a man who would be hard-pushed to ever get his face stuck between railings), must be on the verge of ovulating. Or maybe these are just the exceptions which prove the rule.