The secret to running & swimming faster is the position of your belly button

Yes, agreed. A couple of comments attached to the article include:

* Of course there will be differences; we have evolved to deal with different environmental conditions.This is like saying that greyhounds are faster than foxhounds but fox hounds are better at chasing foxes!

* There's a bloke in the pub whose belly button looks like it'll be fairly close to his knees soon. I can't see him making a great swimmer though :)