Keeping astronauts healthy in space isn’t only a matter of making sure that they get enough exercise and good food to eat. It’s also important to consider their mental well-being. This is an important factor in any job, but it’s particularly important for people who are living in space aboard the International Space Station (ISS). As there is no standard day and night cycle, it can be hard to adjust to the sleeping schedule. And of course, the astronauts
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