Answer:
I moan I groan I chase after you. I never seem to rest. Timeβs up for you.
Travel a mile and I will change, travel a million and I will end as I started. What am I?
I don't live within a house, nor do I live without. Most will use me when they come in, and again when they go out. What am I?
What begins with T ends with T and has T in it?
Iβm white; perfect for cutting & grinding. For most animals I am a useful tool.
No matter how little or how much you use me, you change me every month.