If your local grocery had it, would you use this 'Trim Trolley' that helps you lose weight as you shop?

A cart designed to help shoppers burn calories while trawling the aisles was recently unveiled by a British supermarket chain. The 'Trim Trolley' allows the shopper to select different levels of resistance, making it harder to push. It has a pulse monitor, timer, and computer for working out its speed and how many calories the shopper has used up...

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