I sprint for exercise: NASA's iRAT study

Run far or run fast? That is one of the questions NASA is trying to answer with one of its latest studies—and the answers may help keep us in shape on Earth, as well as in space. Even with regular exercise, astronauts who ...

How does exercise work in zero-G?

Here's the thing about going to the International Space Station: No one can predict what you'll need to do during your six-month stay there. Maybe something breaks and you need to go "outside" to fix it, in a spacesuit. Maybe ...