Excerpt from The Official Residents’ Guide to Moon Base Alpha, © 2040 by National Aeronautics and Space Administration:

SLEEP

Although great care has been taken to provide the highest quality sleeping quarters at MBA, there is a slight chance you might experience some issues with sleep at night, especially immediately after your arrival. Sleep difficulties are not new to the space program, but you will be pleased to know that decades of research have greatly improved your ability to get a good night’s rest! With our dark, quiet sleeping spaces, steady oxygen flows, and comfortable mattresses, after a few days’ adjustment to life on the moon we guarantee you’ll be sleeping just as well as you did on earth—if not better!^I

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I. A full night’s sleep is actually not guaranteed. If you continue to have difficulties getting rest, please consult with the base doctor and/or psychiatrist for help. If sleeplessness persists, specialized drugs designed to aid sleep in non-earth locations can be prescribed.