Spending two and a half hours a week doing light physical activity like brisk walking can lower the risk of coronary heart disease by 25 per cent in women under age 50 according to new research. For the study published in the American Heart Association's journal Circulation the researchers took women aged between 27-44 and found that women with the highest level of light physical activity were at a 25 per cent lower risk incidence of coronary heart disease. Our reason for carrying out this study was primarily to focus on younger women. We wanted to identify steps that young