Saw a great idea on the teev the other night; As well as having all the guff on food packaging stating the amount of salt, sugar, preservatives, kilojoules and so forth, a proposal is in for stickers to be put on the packets to tell you how much walking time is required to burn off that particular item. It was brilliant; much easier for folks to identify how bad the food item is for you via how many walking minutes required to burn it off...sort of a shock tactic. A snickers bar was something like 25 mins, cans of coke were similar (or more?), and so on. The problem will be - how fast is the walker walking? I see folks out walking, and seriously; for a decent number of them; they may as well not bother. The other problem will be; like with cigarette smokers; you can make the packs as shocking as you like, but they still choof away. I don't know that the idea - as brilliant as it is - will work.