Sleepwalking's telltale signs — and how to stay safe if these describe you: 'Unusual behaviors'

Ognomy got featured on an article by Fox News discussing the topic of sleepwalking and its telltale signs. 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 — and what causes it?