Walking to school has future benefits

EDITOR,—Helen Trippe highlights the important role of government policy in encouraging physical activity in schoolchildren.1 The government's new policy statement on sport, Raising the Game, proposes a minimum of two hours of sport and physical education a week for all children up to age 16.2 For Trippe, the policy statement is a start but is not enough: “Interventions to change children's preferred activity levels need to …