Anthropologist and author David Samson examines how the story of human sleep unfolded in his new book, “The Sleepless Ape.” ...

1. Fill your plate with fibre: Diet is key, as a well-nourished gut microbiota reduces body inflammation and improves sleep ...

On dry nights, the San hunter-gatherers of Namibia often sleep under the stars. They have no electric lights or new Netflix releases keeping them awake. Yet when they rise in the morning, they haven’t ...

For millennia, philosophers have argued over why humans sleep and dream. In his fourth-century-bc treatise On Sleep and Sleeplessness, the philosopher Aristotle argued that sleep is a necessary, ...

Consequently, we humans, as well as all other organisms, developed a circadian rhythm in our physiology and behaviors with ...

Caffeine is the world’s most widely used stimulant, and plenty of people use it to ward off morning grogginess or simply to ...

Add Yahoo as a preferred source to see more of our stories on Google. A painting of a woman waking up. The wild thing about Ekirch’s study was that the evidence of biphasic sleep was staring us in the ...

N early half of all Americans and around 40% of Britons now use a smartwatch, smart ring, phone app or another similar device to track their sleep. Are these gadgets accurate—an ...

You have almost certainly lived this moment: stumbling through a morning after no sleep, locking eyes with someone in the ...