The Curious Case of 4-Hour Sleepers

To sleep or not to sleep

The River Crossing by Jonah Calinawan (source)

Sleep is a funny thing.

Once upon a time, I dreamed of less sleep. I fantasised about being one of those engines of productivity: the 4-hour sleepers.

As a 9-hour sleeper, I've always been fascinated by those who sleep less (the grass, as they say, is always greener). How odd that some people can function with…