3 AM is called the "Devil's Hour," and it's the time when the highest paranormal activity is believed to occur.

If someone repeatedly calls your name in your sleep, many believe it could be a restless spirit trying to reach you.

Keeping a mirror in front of your bed at night is considered dangerous, because mirrors are believed to be portals for spirits.

If a dog or cat suddenly stares at one spot and starts barking or reacting, people say a spirit might be present there.

When a dead relative appears in your dream, it may not be just memories - it could be an unfinished message from them.