If this a helpful tool to battle the bulge, or is it a nag?  This belt can tighten up and shake you if it notices you've been sitting too long.

It also sends data to an iPhone app, and if it notices your waist is expanding, it starts shaming you about the weight you're gaining. And you thought your husband was insensitive about it!

This was unveiled at the Consumer Electronics Show in Las Vegas this week, and it will be for sale by the end of the year.  Just in time for the next holiday season when we really start shoveling in the food.

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