Some people remember one or more of these awakenings, others do not. Let's consider what a healthy night's sleep looks like. Adults usually move through five or six sleep cycles in a night ...

Researchers at the University of Lausanne have identified a novel role for the brain's 'locus coeruleus' in sleep and its disruptions.

a healthy night’s sleep consists of cycles throughout the night, involving frequent awakenings. Some people may recall these brief disruptions, while others may not. Let's take a closer look at ...

As the clocks go back an hour early on Sunday — affecting the nation’s health as ... the time you’d like to wake up in our tool below and, based on 90-minute sleep cycles, we can tell ...