Physical activity not only improves strength and immunity but improves mental health too. Common mental health disorders such as depression, obsessive-compulsive disorder and phobia have a major impact on the well-being and daily functioning of people. .Research studies have observed that regular physical activity can help lower anxiety levels, improve mood and lower the risk of complications such as heart disease. A new study published in the Journal of Affective Disorders studied the effect of cardiovascular fitness on mental health disorders. The study analysed the data on the benefits of various cardiorespiratory exercises such as walking, cycling, running and push-ups, on health. The study has found that cardiorespiratory exercises lower depression by 17 per cent. It improves the structure of different regions of the brain. This improves the functioning of the brain, especially the regions most affected due to depression and anxiety. Cardiorespiratory exercises also lower inflammation and oxidative stress, the two major contributors to mental health disorders. It is advised to consult your doctor to know the right exercise regime for you.