Continuous sleep is a modern habit, not an evolutionary constant, which helps explain why many of us still wake at 3 am and wonder if something's wrong.

Continuous sleep is a modern habit, not an evolutionary constant, which helps explain why many of us still wake at 3am and wonder if something’s wrong. It might help to know that this is a deeply ...

It's a commonly held belief that before artificial lighting, human sleep was 'naturally' divided into two distinct periods, but how true is that?

A naturopathic doctor’s video explaining the viral phenomenon of the “second wind” and its effects on sleep hormones has gone viral, resonating with many night owls. In the clip, Dr Kara explains that ...

For hundreds of years, night didn't mean a long sleep. Long before electric lights lit up homes and streets, people lived ...

Categorizing people into just two groups — late and early risers — may be oversimplified when it comes to health and behaviour.

It's nighttime and you're exhausted. But the hotel bed feels wrong. The mini fridge won't stop making that low, irritating hum. The power outlet lights feel brighter than the sun. Outside, random car ...