In our society food is often connected with recreation we go out for coffee, invite friends over for drinks,celebrate special occasions with cakes or big meals. We can't think of baseball without thinking of hot dogs and beer, and eating is so often an accompaniment to watching TV that we talk of TV snacks and TV dinners. Just as pavlov's dog learned to salivate ate the sound of a bell the activities we associate with food can become signals to eat. Watching TV becomes a signal for potato chips ; talking with friends become a signal for coffee and doughnuts ; nodding over a book tells us it's time for pie and milk