i could just just barely breathe, any deeper, augh. can't do it. so that's what that's all about. that's why you have to have pumps at the surface or you have to bring a scuba tank with you. and with that scuba tank, that's regulated so the deeper you go, the more pressure it feeds into your lungs. got a little regulator, and it keeps the pressure in your lungs the same as the pressure of the water outside without your lungs having to be scrunched down, so they blow up. what's the first thing that scuba types will tell you if you're at the bottom and you've got a mouthful-- a lungful of air and you abandon things and you go to the top, what's the first thing they tell you not to do? hold your breath. what's the thing that people tend to do? oh, i gonna get all the way to surface, i better save all i got, right? so you're-- what's going to happen you gang? yeah. just as this balloon sinks deeper and deeper and gets smaller and smaller, if it's at the bottom, very very small and i stretch to come to the top, what's going to happen to the size? what if that's you holding your breath