Answer:
The more you take, the more you leave behind. What are they?
What has 4 fingers and a thumb, but is not living?
Possibly the word most commonly said before taking a sip
Mouth up it gets filled, mouth down it gets empty.
You could do this to a motion, see it on a watch, or place this in a race.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.