We usually underestimate our sleep, but the situation might change if we start to experience problems with falling asleep. NASA astronauts know very well what a sleep disorder is as they often suffer from insomnia. To avoid these situations, scientists have developed a method of falling asleep that has proved its efficacy both in space and on Earth.
from BrightSide RSS https://brightside.me/inspiration-health/7-rules-from-nasa-astronauts-that-can-help-you-get-enough-sleep-579410/
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