So, I went to sleep last night and felt the weird tugging/pulling sensation again around on my forehead. I knew it was gonna happen because of this. Yet, once again I found my self floating right where i was sleeping. I didn't see my because

I was facing the same way i was sleeping. I recall being very heavy for some reason. I tried to float my legs down to the floor so i could walk, but then it ended.

Why do my experiences only last 10 - 15 seconds? Any body got any ideas?