Answer:
What has two hands, a round face, always runs, but stays in place?
I am the heart that does not beat. If cut, I bleed without blood. I can fly, but have no wings. I can float, but have no fins. I can sing, but have no mouth.
There is one word that stands the test of time and holds fast to the center of everything. Though everyone will try at least once in their life to move around this word, but in fact, unknowingly, they use it every moment of the day. Young or old, awake or in sleep, human or animal, this word stands fast. It belongs to everyone, to all living things, but no one can master it. The word is?
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox.
You use it between your head and your toes, the more it works the thinner it grows.