Rikard W€ ardig, Margareta Bachrach-Lindstr€ om, Sally Hultsj€ o, Torbj€ orn Lindstr€ om and Anniqa Foldemo Aims and objectives. To describe how persons with psychosis perceive participation in a lifestyle intervention, and use these perceptions to present factors to for consideration in future interventions. Background. Metabolic syndrome is common in persons with psychosis. A healthy lifestyle is the primary option for preventing and treating metabolic syndrome, which is why the importance of lifestyle interventions has come into focus among health care professionals. Identifying perceptions of participation in a lifestyle intervention can increase the understanding of how to design future interventions. Design. A qualitative, phenomenographic approach was selected, using semistructured interviews. Methods. The sample consisted of 40 participants with a psychotic disorder, who had undergone a lifestyle intervention focusing on theoretical education in healthy eating and physical activities. The interviews were conducted in 2011 and 2012, six to seven months after the intervention had been completed. Results. The findings comprise three categories that emphasise the need for a moderate intervention level that facilitates participation and thereby social interactions among group members. The experience of success in the intervention supported the perception of oneself as a capable individual. However, it could also be the opposite, another experience of failure. Conclusion. Content in moderation can facilitate participation, and participants can thereby achieve health benefits and find social contacts. In addition to physical activity and lifestyle habits, interventions should have a social focus and be continuous. Professional support is a prerequisite and should facilitate the participants' ability to mirror themselves against healthy people in society by introducing activities that ordinary people do. Relevance for clinical practice. Identifying perceptions of participation in a lifestyle intervention can increase the understanding of how to design and manage What does this paper contribute to the wider global clinical community?• Content in moderation should be the foundation for lifestyle interventions targeted at persons with psychosis. This can facilitate continued participation, and participants can achieve health benefits and find social contacts.• Physical health should be a prominent theme in mental health services, and the approach should be long term, continuous, and aim for further individualisation.• Nurses should facilitate participants' ability to compare themselves with healthy people in society by introducing activities that people who do not suffer from psychosis do. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.