The frustrating cycle of hitting snooze and struggling through mornings despite adequate sleep duration affects millions of Americans. This disconnect between sleep quantity and morning alertness has ...

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 ...

Apple’s sleep charts can feel like a nightly report card, and “core sleep” often ends up in the spotlight. Yet the science behind wearables suggests that fixating on that one stage is a distraction ...