Answer:
It regulates our daily movements, but it feels no interest in our lives. It directs us when to come and go, but does not care if we pay attention. What is it?
What contains zero calories, but if you consume it, you will probably gain weight?
What goes up but never comes down?
What word is a plural, but when you add an "S" to the end, it becomes singular?
What can be big, white, dirty and wicked?
What is always coming but never arrives?