This learner resource, SISFFIT041, is a comprehensive guide for developing personalised exercise programs. It details the process of identifying client needs through pre-exercise screening and fitness assessments, planning programs based on individual preferences and medical advice, and designing individual exercise sessions. The resource incorporates training principles, including adaptation, overload, and specificity, to ensure program effectiveness and safety. Finally, it outlines methods for documenting both the program and individual sessions, adhering to organisational formats.