One thing in space, just like home: you cannot escape housework. Every Saturday is clean-the-station day.

One thing in space, just like home: you cannot escape housework. Every Saturday is clean-the-station day.

Mental fitness is obviously important to being an astronaut, but so it physical fitness. For example, space walks are extremely physically demanding. We train for them in a giant swimming pool and we wear this suit that weighs about 300 pounds.