This happened once to me when I was caring for my Father who was dying. I fell asleep and left my body and floated up in the darkness of the night. All I could think was that I was dying and that I had to raise my small children. I came back into my body and my heart was beating so fast. I still won't sit in that chair in my mom's living room. I hated the feeling of being separate from my body but it made me realize that my Dad would live on in some respect. I had more peace with letting him go but I missed my body so much and I really pray that we will always have the ability to hug, kiss, hold hands, touch . . . I didn't like the separation at all.