sleeping

The Age of the Bed Changed the Way We Sleep

One historian reconstructs what nighttime was like in early modern Europe, and how the darkness affected people's sleep patterns.
French bulldog puppy sleeping on the carpet

Why Do We Sleep?

A growing consensus among those who hold this view is that sleep is needed for maintaining a healthy nervous system, not necessarily a brain.
Windowsill

When Americans Became Obsessed with Fresh Air

Once it became clear that mosquitoes, not the air itself, carried malaria, early 20th-century Americans went to extreme lengths to enjoy fresh air at night.
Sleeping dog

Extreme Napping in the Animal Kingdom

Although sleep is ubiquitous for animals with brains, differences in how, why, and for how long animals sleep remain unexplained.
Sleepy Bulldog

Why Does Eating Food Make You Sleepy?

Your turkey is not to blame.

Take a Nap, It’s Good For You

Like taking a nap? Exploring the research that finds a positive correlation between health and a short daily rest.

Early Bird? Night Owl? It Might Be in Your Genes.

Researchers in England have identified several genes associated with the timing of peak activity.