This learner resource, "SISFFIT051 – Establish and maintain professional practice for fitness instruction," guides fitness instructors through establishing and maintaining professional practice. It covers legal and ethical requirements, collaborative relationships with health professionals, professional reflection and development, and maintaining evidence-based knowledge. The resource uses a chapter format, incorporating activities and multimedia links to enhance learning. Specific areas explored include client confidentiality, work health and safety, and the use of public spaces for fitness instruction, along with the importance of continuous professional development. Finally, the resource extensively covers relevant Australian legislation and industry standards.