Forget about a full moon bringing out the crazies - it appears it may also ruin your sleep.
In a study involving 33 participants, when the moon was full it took participants longer to fall asleep and led to a lower quality of sleep - despite the fact that they were in a completely dark room.
Those involved also produced lower levels of melatonin - an important sleep hormone.
So the obvious explanation, light, being a factor gets thrown out of the window this time.
Why does a full moon harm your sleep, then?
Unfortunately, researchers don't have a clue. Hopefully we'll see more research in the not-too-distant future.
Feel free to share your own ideas and suggestions - the comments form is below, as per usual.
Source: Current Biology
Last updated: July 25, 2013