If we drop a cup of pudding on Earth, it falls to the floor. Without gravity, objects would float off into space. If an astronaut drops a cup of pudding in the Space Shuttle or the International Space Station, it falls too, but doesn't look like it's falling. That's because the pudding, the astronauts, and the spacecraft are all falling together at the same rate, while at the same time traveling around the Earth. Items such as food, science experiments, and exercise equipment must all be attached to the spacecraft so they don't float around in the cabins.
Astronauts float too.
When they want to stay still enough to eat, work, exercise, or sleep, astronauts hold onto one of the many handles or attach themselves to the spacecraft. Download now, it's free.