If you
reach your goal, you'll be rewarded with anything from money and gift cards from sponsors to a free one - month gym membership — but every time you engage in the habit that you're trying to rid yourself of, like skipping a gym session or lighting up a cigarette, the device will give you an electric shock that stimulates your
brain to associate the negative sensation with that particular behavior,
eventually helping you eliminate the unwanted habit.
The dumping of stress hormones into the
brain leaves the dog increasingly sensitized to stressors, which replicates the puzzle pieces dropping faster and faster until you
eventually reach the threshold.