It was about three PM when I started looking through this chapter today. Around this time of day I tend to get sleepy, and I generally avoid doing anything productive. This chapter was doubly dangerous to try to overcome, considering a large majority of it goes in depth sleep and dreaming--making me crave that nap even more.
However, I managed to stay awake, and found some interesting facts that I didn't know before about the dreamworld...
1. We can fall asleep with our eyes open.
This would make falling asleep right now a lot more plausible. It also makes narcolepsy easier-a disorder that makes you suddenly fall asleep from anywhere between a few seconds to a few minutes.
2. Nightmares are different than Night Terrors.
Night terrors actually take place during non-REM sleep. This is during stages 3 and 4 of sleep. The book references to these stages as "sleeping like a baby" because it is such a deep, dead sleep. REM sleep is when we have fast waves going through our brains and our blood pressure is hyped up. We dream more during this stage and dreams are typically more "emotional" and "illogically" driven.
3. Dolphins sleep with one eye open.
Literally, they sleep with one hemisphere of their brain, while the other watches out for predators and goes to the surface to breathe. After a while, the hemisphere's switch, and the other one sleeps and the former is alert. Basically, dolphins are awesome.