Why We Sleep: Unlocking the Power of Sleep and Dreams

This book is horrifying and amazing at the same time because unless you're one of the very few people with regular 7—9 hour sleep, you will get to find out exactly how you're literally shortening your lifespan, destroying your immunity, lowering your attention span and forgetting half of the stuff you wanted to learn! On the other hand, it is great motivation to think long and hard about your shitty sleeping habit and finally fix it which is what I did.

There is a lot of worth quoting but I liked this one because it is so unexpected:

“After four hours of sleep for six nights, participants' performance was just as bad as those who had not slept for twenty-four hours straight—that is, a 400% increase in the number of microsleeps.”