Answer:
Each morning I appear to lie at your feet, all day I follow no matter how fast you run. Yet I nearly perish in the midday sun.
When someone uses this acronym, you know you've got to pick up the pace
The day is their night and the night is their day, when I shout and they shout back I run away.
There is a man in a 4 story building. He jumps out of the window and is unharmed. He used no padding, and had no harm done. How?
What runs around the whole yard without moving?
I march before armies a thousand salute me. My fall can bring victory but no one would shoot me. The wind is my lover one-legged am I. Name me and see me at home in the sky.