Most of us have seen the classic television trope of a sleepwalker: a person, arms outstretched, staggering about the house as if directed by a video game controller. But what is sleepwalking, exactly ...

Once, years ago, I found myself in an ice-cold bath with no memory of walking to the bathroom or running the tub. Another time, I terrified my friend by leaving our hotel room in the middle of the ...

An hour or two after my school-age son has gone to bed, he sometimes wakes up from a nightmare, walks to my room and mumbles incoherently about what’s scaring him. But he seems off, and I can't get ...

When you fall asleep each night, your body goes into restore mode, repairing tissues and balancing your immune system. Your brain is also pretty active, clearing out waste while consolidating episodes ...