Exercising can be fun and enjoyable . You don't have to climb the Everest or run a marathon to be considered an active person. If doing any sort of physical activity is relatively new to you, take it slow. However, the Public Health Agency of Canada recommends at least 2.5 hours of physical activity a week, focusing on aerobic exercises. And you never know, a new found passion may be discovered for biking, swimming, or jogging!