Birds do it, bees do it, probably even fleas do it. We all sleep, but why? This film peeks under the covers and reveals a secret, dreamy world – as we explore how and why, sleep evolved, in us and other creatures across the world. Predators on high protein diets sleep more than they are awake. Whereas giraffes hardly sleep at all. Swifts sleep on the wing. Dolphins only sleep with one side of their brain at a time. Some creatures sleep their way through winter and others through drought. What does sleep, or a lack of it, mean to performance, intelligence, and success? If we don’t get enough, there’s more yawning, lethargy. It’s harder for injuries to repair and we’re more likely to make mistakes – some of which can be fatal! For all of the world’s creatures a good night’s sleep can be the difference between life and death!
