According to the WHO, we should do between 30 and 40 minutes of physical activity a day. Diabetes, cancer, Alzheimer's disease: walking is said to have numerous and unsuspected beneficial effects on our bodies. Details and advice from Professor François Carré, cardiologist and sports doctor.Exercise is very good for the body.it makes the body system free from stress and release anxiety.Walking is one of the major exercises people engaged in especially people that have so much fat in the system and want to burn it.one can easily loss weight by walking for thirty minutes or more every day.it is essential for the body to grow well.