Noise from aircraft at night is linked with disturbed sleep quality and sleep-wake cycle, a new study using movement trackers has shown. Environmental health experts at the University of Leicester ...

Sleeping for 7 to 9 hours at night isn't the only way to catch some z's. Here are four alternative sleep cycles -- and they're pretty obscure. Annie Miller Medical Reviewer Annie Miller is a licensed ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

Late nights, festive stress, and irregular sleep during holidays can trigger internal jet lag. Doctors warn that disrupted ...