Background. To maximize often limited resources for health promotion interventions, it is critical to identify and consult with the target population to inform program design and implementation. Objective. To highlight the value of scoping (identifying any barriers or limitations within a target population group) in the initial social marketing phase of targeting physical activity interventions for positive mental health. Method. Semistructured focus groups were undertaken in 2 segmented population groups: Study 1â¿¿ adults (aged between 20 and 50 years) from a deprived community; Study 2â¿¿ older adults (50+ years of age) attending physical activity groups. Discussions centered on health, mental health, physical activity, and methods of promotion.