What kind of religion is based on the idea that each human has a double that is active during sleep?

Question

Quizplus · Accepted Answer

Animism is the belief that objects, places, and creatures all possess a distinct spiritual essence. This belief system often includes the idea that humans have a spirit or soul that is separate from their physical body, which can travel or be active during sleep, similar to the concept described in the question.

What Kind of Religion Is Based on the Idea That