Answer:
A man shaves several times a day, yet he still has a beard. Who is this man?
You throw me out when you use me and take me in when you are done.
I fill a room but take no space.
After you go through a fall, I will take over. All life will stall, or at least grow slower. What am I?
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?