
Every cognitive function to some extent seems to be affected by sleep loss.
Chiara Cirelli[1].
If sleep does not serve an absolutely vital function, then it is the biggest mistake the evolutionary process has ever made.
Allan Rechtschaffen[2].

It seems as if we are now living in a worldwide test of the negative consequences of sleep deprivation.
Robert Stickgold[3].
The way to a more productive, more inspired, more joyful life is getting enough sleep.
Arianna Huffington[4].
Create your account to keep this answer and continue from it later.
Let's look at alternatives: