Research suggests that an average person needs to eat 2.446 kCal a day to maintain current weight doing minimal exercise.
According to physiological tests conducted by the National Diet and Nutrition Survey, however, our average daily energy expenditure is 2,880 kCal.
So why are so many of us putting on weight?
Source: Behavioural Insights Team, from Barometer, The Spectator, 13 August 2016.