When choosing a meal at a restaurant, many of us forgo the most tempting options for the sake of our waistlines.
But scientists have now found that if we ask for a doggy bag before eating, we're less likely to overindulge – even if we order a particularly large meal.
They found that if we know our food is going in the bin, we are likely to overeat in order to finish it.
If we can take it home, however, we are more likely stop when we're full.
For the study, researchers at Pennsylvania State University split 50 women into two groups and gave them a meal once a week for a month. The portion sizes for both groups increased each week.