Astral Walking?

The Astral Sleep - by Jeroen van Valkenburg

The Astral Sleep – by Jeroen van Valkenburg (Photo credit: Wikipedia)

Q:  What is Astral Walking?

Someone tried to explain how to do this but it was too confusing.  I thought, “Why would anyone want to get up from sleep while asleep?”  Sleep is so precious.  I don’t get it.  Is it part of the occult?  Mental exercise?  Is it traveling without air fare and hotel costs?  What does it accomplish?  Do you need a passport?

Need answers.