Conduct of a randomised multicenter clinical trial with intervention and control group in 300 elderly patients of the Geriatric/Internal Medicine service in the hospitals participating in the project. The hospital care model of the HUN Geriatrics Service has demonstrated, through scientific evidence, the prevention of disability generated during hospitalisation in 60 % of patients who perform the individualised exercise program. Starting from the basis of this model, and seeking its optimisation, an innovative hospital care model will be developed jointly that will be implemented in HDFF (Portugal), CHU-T (France), SAAS (Andorra) and HUN (Spain). The design of the clinical trial will take into account the needs, possibilities and characteristics of each hospital for its implementation and subsequent follow-up after 3 months of the intervention, in order to assess the adherence and the results of the practice of physical exercise and adoption of healthy habits. This pilot activity will begin with the joint elaboration of the protocol, and, after its approval by the different Ethical Committees, the recruitment of patients in the 3 hospitals that will be randomised through a blind procedure (month 7) will begin. The duration of the clinical trial is estimated at 2 years, and once completed, the results analysis will be carried out. The results of this pilot activity tested in the three hospitals will allow the development of a solution that can be easily transferred to other hospitals in different territories. The implementation of this pilot activity in three hospitals in different countries and regions brings added value to the results, since it includes a heterogeneous population with different social and economic characteristics of the SUDOE territory and with different health systems, increasing the impact of the results at a scientific level with social and political impact.