Project Objectives: This study will develop and pilot test a well-specified, group-based peer coaching intervention tailored to the unique needs of older Veterans with psychotic disorders: Peer Education on Exercise for Recovery (PEER). PEER will provide intensive coaching from a VA Peer Specialist to promote participation in a supervised fitness training program for older Veterans. To develop the intervention, materials from existing peer-delivered wellness interventions for Veterans with serious mental illness will be tailored for older Veterans with psychosis, through an iterative process synthesizing the extant literature and pilot data, developing draft materials, and obtaining feedback from a multidisciplinary panel of expert mentors/consultants and Peer Specialists/Veteran consumers. A small open trial of PEER will be conducted with 6 older Veterans with psychotic disorders (ages 50 and up); qualitative interviews will explore participants' perceptions of PEER. Finally, a pilot randomized controlled trial (RCT) of PEER will be conducted. Older Veterans with psychotic disorders (ages 50 and up, n=50) will be enrolled in supervised fitness training and randomized to receive group-based peer coaching (the PEER condition) or individual support from non-peer staff (the enhanced supervised fitness training (ESFT) condition). Feasibility of PEER (rates of recruitment, intervention engagement, and peer coach fidelity) will be measured. The impact of PEER versus ESFT on attendance of exercise sessions, levels of physical activity, and physical functioning will be examined. Additionally, the PI will engage in training activities to develop expertise in the functional rehabilitation of older adults with psychosis.