Answer:
What has 4 legs in the morning, 2 legs in the evening and 3 legs in the night?
It's like food but water kills it. What is it?
They try to beat me, they try in vain. And when I win, I end the pain.
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-Βlegged am I. Name me and see me at home in the sky.
If you break me, I do not stop working. If you touch me, I may be snared. If you lose me, nothing will matter.
You use it between your head and your toes, the more it works the thinner it grows.