Why do I have trouble sleeping during a full moon?

I can only think of two reasons: 1. The sunlight reflected by the moon is shining into your room and keeping you awake. At night it gets darker and colder so our bodies use these changes as a ques to go to sleep. Try getting some more opaque blinds/curtains so your room is as close to pure darkness as possible. 2. You are mentally stimulated by the fact that it's a full moon... so much so that you cannot stop thinking about it long enough to allow your brain to calm down. In that case you need to figure out what it is about the moon that fascinates/scares/intrigues/angers/excites/(insert feelings and thoughts about moon here) so much (books and or movies may be involved) and avoid thinking about that for at least half an hour before bed. If that doesn't work, try out different methods of relaxation e.g yoga, meditation, light reading, counting sheep, ASMR videos (whatever works best for you!) to help distract you and put you in the right mindset to sleep. Hope this helped!

When there's a full moon, it throws your body off balance and it will take longer for you to get to sleep and trying to stay sleep throughout the night.

I've heard that the moon has a lot of interesting effects on the mind. It's sort of an odd, subliminal instinct that's in all of us, and if that can be detrimental to sleep, then that's completely normal.

Perhaps the light from the full moon interferes? They can be very bright, and your eyes may be sensitive enough that the extra light gives you trouble sleeping.

The solar radiation reflected by the full moon and the lunar tidal force might modify brain activity.

Sleeping like this is likely based on a general superstition that you have. If it goes back a while, you can try to place this and overcome it. If it is based on the physical state of the night (eg. Fuller light source) that is concerning you, just focus on finding the most comfortable sleeping position possible and close your curtains. You could, perhaps, close your curtains before it gets too dark, so that you don't see this full moon in the first place. However, the best way to go about this is just to overcome the issue, you can do it!

I do not recall having problems sleeping during a full moon. The only problem I recall is if its light was coming in too bright through the windows. At that point I would just close tight.

Yep! This is an actual thing. No you are not a werewolf. Our circadian systems adapted to the lunar cycle and somehow affected how we sleep when the moon is full. Our body senses the light and cycle and reacts accordingly.

Because you are a werewolf. Just kidding. Maybe it's all that light though. So try getting some curtains.

You have trouble sleeping during a full moon because of the brightness of the moon, possibly, or even the superstition of the full moon.