Inclusion Criteria:  DSM-5 mild to moderate depression who have received evaluation and basic psychosocial interventions for 4-8 weeks (minimum four visits) without response, i.e. not achieved improvement by at least 50 % as assessed from clinical records  Exclusion Criteria:  Severe depression Eating disorder High risk for suicide Intellectual disability Actual physical activity the last four weeks meeting the level for sustained health by American College of Sports Medicine, i.e. at least 150 min per week of moderate intensity or 75 min per week of high intensity38 Adjustment of antidepressant medication within the last four weeks or stimulants the last two weeks Chronic somatic illness precluding exercise In need of interpreter Social circumstances interfering with a regular exercise schedule Concomitant psychotherapy