Patients suffering from severe psychiatric disorders have a greatly reduced life expectancy due to psychiatric illness itself, poor lifestyle and complications related to the metabolic side effects of psychotropic treatments. Because of the current knowledge on the effect of sport on physical health, we consider that it is essential to improve the physical condition of patients and to limit these complications. In addition, studies of patients with mental disorders have shown positive effects of regular physical activity on anxiety, depressive and schizophrenia symptoms. As shown by the various studies selected, the establishment of a programme of physical activities, including yoga, aerobic exercises or muscle building, adapted from 4 to 24 weeks in psychiatric care can improve the physical and mental state in comparison with a control group, by practicing. Indeed, there is an improvement in VO₂max of 2.2 ml/min/kg, which represents a 90.5% improvement over the control groups, a decrease in BMI and in PANSS score. However, the comparison of these different studies does not allow the minimum conditions required to obtain significant results tob e determined. These findings suggest future projects and follow up research in this field.