What would happen if you slept on a magnet every night?

Magnetic fields can indeed affect the brain, albeit temporarily. Transcranial Magnetic Stimulation (TMS) uses concentrated varying magnetic fields to stimulate areas of the cortex below the scalp. Its field is usually around 1. read more

Only adding to Malcom's answer; if you slept on an individual magnet, nothing would happen to your brain. But, I suspect your scalp would chafe and be left with the impression of said magnet, well into lunch time. If you don't "mind" that, you're brain won't give it a thought either. read more

(Basically large amounts of blood pools in the brain, clotting it and killing you). This is what I would assume, due to biology and physics, would happen when trying to sleep upside down. We know that: When you hang upside down, the blood rushes to your head. If you do this for a long time, it can damage your brain. read more

You’re three times more likely to be involved in a car accident if you get six or fewer hours of sleep each night, according to the National Sleep Foundation. read more