I do not breathe, but I run and jump.
I do not eat, but I swim and stretch.
I do not drink, but I sleep and stand.
I do not think, but I grow and play.
I do not see, but you see me every day.
What am I?
I weaken all men for hours each day.
I show you strange visions while you are away.
I take you by night, by day take you back,
None suffer to have me, but do from my lack.
What am I?