What... How... I don't even... Maybe because I'm 5'2", short-waisted, and this baby is a bit big. But the PHYSICS, man, the PHYSICS! It's like balancing a board on a beach ball. And though I want very little more than to sprawl out on my tummy and take a nap, it's a physical impossibility for me (though DH did get me a prenatal massage for my birthday, so maybe...)