Answer:
I fill a room but take no space. What am I?
I run up and down the stairs without moving
They come out at night without being called. They are lost in the day without being stolen. What are they?
I make you weak at the worst of all times. I keep you safe I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak but seldom the bold.
When you need me, you must find me. When you find me, you no longer need me. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.