@ddominique,
I'm sure your mother is a lovely woman. She's still wrong, sorry.
Try
www.sparkpeople.com and read from real experts. As for Dr. Oz, as I recall, there are any number of scams being perpetrated in his name (you see them all the time as "Dr. Oz lost 40 lbs.!" or "Rachael Ray lost 30 lbs.!" or whatever).
I am sorry you are offended by what I wrote. Yes, there is some small amount of weight loss when you sleep. It's your resting metabolism. Everybody has this -- it does take a few calories to keep your heart and lungs going. But not too many. You burn more calories by exercising, and to suggest that people do better by not exercising is just plain irresponsible.
And I am sorry if you feel I offended your mother.