Why is it that some people can't sleep when it's full-moon?

Because it is light enough to keep people outside… and the ones trying to sleep are worring about the possible damage to property from hoolgans

they’re too busy turning into werewolves?

They are at the window howling sweetly at the moon.

Maybe tidal forces in the brain.

Hi, see this.
http://www.insomnia911.com/sleep-insomnia/moon.htm

Superstition.

The hairs growing around my muzzle itch too much for sleeping. Besides the overwhelming urge to go out and bite someone. Sometimes Snapes potion helps a bit.

@paintingtheocean Sorry but I have to say that the conclusion drawn in that article is the worst conclusion I have ever read.

Because of Confirmation Bias.

@paintingtheocean If I could subtract luvre from you I would. That article is an abomination of logic and pseudoscience.

Full moons also create positively ionized air.

“Just as good benefits are provided by immersing yourself in negative ions, bad effects come from breathing air with a high density of positive ions. Before a storm the positive ion concentration becomes more than three times the amount of negative ions. If the barometer is falling in anticipation of a storm, brace yourself. Adults, children, and animals alike react testily to such bad weather, for ahead is the kind of day that may leave you most prone to illness or accident, stupid mistakes and irrational anger. Simply, positive ions are responsible. The full moon increases positive ion ratios, which accounts for the strange and aggressive behavior noted by police and medical services. Studies show that 75% of the population is noticeably and adversely
affected by positive ion ratios, while increased negative ions tend to have a calming influence on these same people.”

source

@filmfann your source is quantumenergywerks? seriously? How about a reference written by someone with a degree? That perhaps indicates who the author is, and cites reliable sources in the body of the work? Is that too much to ask?

Notice the difference in This article.

@gorillapaws I read a book on Negative Ions and their health benefits some years ago, and it said the same thing. I went out and purchased a negative ion generator, and had remarkable health benefits from it.
My cited source was not my original source for this information, and your article doesn’t even mention ions.