I've often said I'm "confused as to why I don't weigh a hundred pounds." I have 4 children of my own and 2 full time babysitting kids. I home school the 6th grader and 2nd grader and the others are 2.5, 20mo, and two 8mo olds.
Making me tired just typing it!
Let me qualify this by saying that I eat 1800 calories a day and still lose weight. I guess I burn a few.