The Mysteries Of Sleep Were Just Too Mysterious

Before he was a journalist, NPR science correspondent Joe Palca studied psychology, and focused on sleep research. He found it frustrating to study sleep: Though there are many questions about why and how we sleep, scientists have very few answers.

How Sounds Undermine Sleep

Why can some people sleep through a jackhammer at the window, while others waken with the lightest whisper? Host Rachel Martin speaks to Johns Hopkins Sleep Disorders Center researcher Jeffrey Ellenbogen about his new study on how noises interrupt sleep.

Chronic Insomnia? Hitting The Treadmill Could Help … Eventually

If you’re chronically sleep deprived, don’t expect 30 minutes on the elliptical to knock you out tonight. The sleep-boosting benefits of exercise take about four months to kick in for people with insomnia, a study suggests. But perseverance pays off.