Answer:
What can be as big as an elephant but weighs nothing?
The time between daylight and darkness when blood drinkers like to come out
I'm the source of all emotion but I'm caged in a white prison.
The more it dries the wetter it gets. What is it?
I'm many people's favorite place, even though many don't remember their stay. You'll love to come but hate to leave. If you get cold, use my sleeve. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?