Food packs should display how much exercise a person would need to take to burn off the calories contained in the product, UK researchers say. Appreciating it would take four hours to walk off the calories in a pizza or 22 minutes to run off a chocolate bar creates an awareness of the energy cost of food, they say. The labels would help people indulge less, exploratory studies suggest. The aim is to encourage healthier eating habits to fight obesity. Prof Daley said many people would be shocked to realise how much physical exercise would be required to burn off calories from certain snacks and treats. Tom Quinn, from the eating disorder charity Beat, said: "Although we recognise the importance of reducing obesity, labelling food in this way risks being incredibly triggering for those suffering from or vulnerable to eating disorders.
