The data's in from the simulated Mars mission in which six trained astronauts were shut up for a year and a half. And it seems that long-term missions of this kind do indeed lead to problems for the crew.
The National Sleep Foundation (NSF) is warning people that they should turn off electronic gadgets an hour before bedtime, following a survey showing that they can keep you awake at night.
Leave this article up on your screen - in case the boss comes by - and settle down comfortably. According to University of California scientists, a lunchtime nap not only refreshes you but can actually make you smarter.
