Good to know this is how Astronauts spend their time in space. Actually, I'm kinda serious. If you're up there and can't take a moment to enjoy the infinite fun that Zero G provides...well...I just feel bad for you.
As this is a nerdy website, I find myself compelled to be nerdy and state that the ISS is not in "Zero G" but rather micro G. Gravity is about 90% strength there on the ISS. They're doing what Douglas Adams described as 'How to Fly': Aim for the ground and miss.