Watch Expedition 55/56 Flight Engineer Ricky Arnold discuss the crew sleeping quarters, why sleep is important and how they adapt for circadian rhythms aboard the space station.

To keep your body working well,

We have some questions about sleep: It’s ok to stay up late, right? Is it possible to control your dreams? Do all animals sleep? Why do we need to sleep anyway?

Studies suggest that good sleep habits can boost mood and GPA while limiting weight gain

People with ADHD often have problems getting to sleep, but is it the ADHD symptoms that causes the lack of sleep or lack of sleep that cause ADHD symptoms?