Take heart

Just four minutes of daily vigorous physical activity halves the risk of heart attack for middle-aged women, say University of Sydney scientists. ‘It’s as simple as a few minutes of activities such as stair climbing, carrying shopping, uphill walking, playing tag with a child or pet, or power walking,’ said lead author, Professor Emmanuel Stamatakis. The study followed 22,368 people aged 40-79 who reported they did not