Answer:
Vikings use this for warmth.
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
A mile from end to end, yet as close to as a friend. A precious commodity, freely given. Seen on the dead and on the living. Found on the rich, poor, short and tall, but shared among children most of all.
What has four wings but cannot fly and uses the wind but does not know why?
You heart it speak, for it has a hard tongue. But it cannot breathe, for it has not a lung.
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?