Answer:
I may seem real but it always turns out I was never there in the first place... you only see me during a certain resting stage.
Who plays when he works and works when he plays?
I can wave my hands at you but I never say goodbye. You are always cool when with me even more so when I am high!
I have 24 keys but cannot open any locks. Sometimes loud sometimes soft
The more you have of it the less you see. What is it?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?