People who used baskets that they carried instead of carts that they pushed were more than three times as likely to choose unhealthy over healthy food items.
Why, exactly, is a little complicated, and involves something called "embodied cognition," or the notion that bodily sensations can influence our thoughts and emotions. In this case, the researchers say that the act of flexing your arm, as you do when holding a basket, somehow encourages you to choose smaller, easier rewards (also known, in this study, as "vices"), while extending your arm, as when you push a cart, has the opposite effect.
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