Answer:
What is so fragile that saying its name breaks it?
One by one we fall from heaven down into the depths of past, And our world is ever upturned so that yet some time we’ll last.
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
You can spin, wheel and twist. But this thing can turn without moving.
You use it between your head and your toes, the more it works the thinner it grows.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?