Bedtime. It seems to take my children by surprise every single night. "It's time to go to bed!" I say, usually in a happy sing-song kind of way, hoping my kids will think they are in for a treat. Their reaction is never a sing-song chorus of "Yea! Let's go to bed!" Instead, all four of them begin to moan and groan. They suddenly start to suffer from extreme hunger and/or thirst. Does this ever happen to you? After 12 years of being a parent, I ...