Can the health of patients with Infective endocarditis (IE) be improved by participation in the physical exercise training within cardiac rehabilitation program? Participants will: * Be physically evaluated by a physiotherapist before and after the progam of physical exercise training within cardiac rehabilitation. * Do individual exercises in a group led by a physiotherapist 2 times weekly during 12 weeks. * Answer digitally surveys on the perceived health for 4 times during 1 year * Participate in interviews on patient's experiences of health and rehabilitation 1 time before and 2 times after the training program during I year.