In a new study featuring 1.2 million people, researchers found that regular physical activity lasting 45 minutes three to five times a week can reduce poor mental health. Adults taking part in the study said they experienced on average 3.4 days of poor mental health each month. For those who were physically active, this reduced to only two days. The study also found that all types of activity, including doing housework and looking after the children, were found to improve mental health no matter people’s age or gender.