From Anne Sweeney, Maidenhead, Berkshire, UK
With reference to childhood exercise, an additional factor struck me. As a child in a car-less household, I was frequently presented with a purse and a shopping bag and told to run and fetch whatever was needed from the local shops, thus clocking up both aerobic and weight-bearing benefits. My own children, however, just pop in the car to the supermarket while the grandchildren sit on the sofa, so maybe lifestyle has a significant impact on how much exercise children really get (27 July, p 42).
