Amazon Is Selling A Bracelet That Shocks You If You Eat Too Much Fast Food

Basically, every time you step out of line, the strap will give you a 350-volt electric shock, just to give you a gentle reminder.

And to give you a bit more of an incentive to be good, your mates can even download an app which means they can give you a buzz if they catch you eating an extra slice of cake or going on a spending spree.

According to the manufacturer: "Pavlok allows you to speak your reptile brain's language by adding an unpleasant element (a safe and harmless 'zap' of electricity on your wrist) to what you have been taught to love (your nasty lingering habit), quickly conditioning your mind to associate an 'unpleasant' feeling with your bad habit... and stopping it all together."

Priced at $199 (£158), the Pavlok has 150 shocks per charge, so, depending how much of a rule breaker you are, it could last quite a while.

He added: "There's a real power in using a little bit of pain to help you break your bad habits."

So far, reviews of the device have been fairly mixed, with some claiming it's helped them change their bad habits, while others have criticised its quality.

One customer wrote: "Wrist band is a little awkward but it does allow for the contacts to be positioned closely to your skin for the best results. I've only used the button on the device to administer the shock.

"I can't comment on how the hand motion function works. The app is ok and does give some information and videos on how to beat whatever habit you're trying to break. At 100 percent on a decent charge it is more than enough of a zap to get your attention.

"I'm glad I bought it, so far I believe it is working. It's not going to cure a lifelong issue in a few days so you have to stick to their plan and really work on it."

The end is nigh.