Answer:
What begins and has no end? What is the ending of all that begins?
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What is it?
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
My love, when I gaze on thy beautiful face. Careering along, yet always in place, the thought has often come into my mind. If I ever shall see thy glorious behind.
No matter how little or how much you use me, you change me every month.
The warmer I am the fresher I am.