Exercise is important for both physical and mental health. It can help prevent chronic diseases like heart disease, cancer, diabetes and obesity, which are among the most common and preventable health problems. Regular exercise, even just 30 minutes of walking per day, has been shown to reduce the risk of diabetes by 58% and result in sustained weight loss. Exercise also improves brain functioning by boosting memory, concentration, mood, and sleep. Both light and moderate physical activity are associated with longer life expectancy according to multiple studies.