The Russian banker who, while awake, decided not to take a risk by purchasing part of an oil company. His sleeping self, however, had a different plan, and wrote a letter instructing his agents to invest heavily. He made $2.5 million.
The woman who hid her diamond ring from herself while she was hypnotized.
The man who went to sleep with paper and a pencil and woke up to a "perfectly coherent essay." Important: this man's name is Dr. John D. Quackenbos.
The man who couldn't swim while he was awake, but regularly traversed a two-mile wide river in his sleep.
People deprived of sleep showed no measurable physical effects. The main results of sleep deprivation showed in personality. After staying up two or three nights in a row, subjects in a study became "irritable, even cantankerous."
It seems that we overestimated the amount of sleep you need in 1927, when Dr. Donald A. Laird said we don't need more than six hours. Now, apparently, you only need five.
Your body temperature falls when you go to sleep, and rises when you wake up.
If you're one of those people who claims you can't get to sleep before 2 a.m., a physiologist in this article is calling you out: "The person who says he can't go to sleep before two a.m. probably doesn't have enough to do to make him healthily fatigued."
If you want to be well rested, no cuddling. People sleep better alone than when sharing a bed.
Remember that Parisian beggar from a few slides ago whose head blood scientists watched ebb and flow? Apparently they came to the wrong conclusion. "It turns out that the amount of blood in the brain, if it changes it all during sleep, increases slightly."
We spend 20 percent of our sleep time dreaming, and average four to seven dreams each night. Researchers discovered this by noticing a connection between jerky eye movements during sleep and a change in brain wave patterns.
Dreams tend to come regularly, every 90 minutes or so.
In an experiment where scientists repeatedly woke up volunteers as soon as they began to dream, the subjects became irritable during the day, even though they received the same amount of sleep as those who weren't woken up. On following nights, they began more and more dreams, to make up for the ones they had lost.
Dreams last anywhere between nine minutes and an hour.
A third of dreams are in color, two-thirds in black and white. The youngs tend to dream in color more than the olds, which makes sense. Maybe the next generation will dream in 3D.