Countless people report waking to a dark figure looming over them. Science blames sleep paralysis—others aren’t so sure.

Rein is diagnosed with narcolepsy—a chronic sleep disorder characterized by overwhelming, uncontrollable daytime drowsiness ...

GRACE Turnbull was just 14 when doctors told her to “stop being dramatic” over a supposed tummy bug, before she woke up ...

People report vivid dreams during rapid-eye-movement sleep. But is this sleep stage really the only time we dream?