The “Emperor of the Night”, as he has been grandly called,1 the Marquis d’Hervey de Saint-Denys was the great pioneer of “lucid dreaming”: to be aware, while you are fully asleep, that you are dreamin

Imagine waking up to find that you’re not awake at all. Your body is asleep, but your mind is running free in a dream where everything feels vivid and real and – because you know you’re dreaming – you

The billion-dollar startup working to optimize health with better sleep

It is widely accepted that memories play a central role in making us who we are. After all, what could make us who we are on these tracks through space and time that we call our lives, other than the

Your ability to experience a stable, coherent sense of self is truly a miracle. Each of us experience profound changes across the course of our lifetime, growing from infants into adults, learning new

From night sweats to snoring, here’s how to sort whatever’s ruining your rest