(Q1) Using collective expert knowledge for designing ideas on how to promote physical activity during the retirement transition

Practical example of using a co-design workshop with the stakeholders and experts in health promotion, exercising, and ageing population to design a novel physical activity intervention in the retirement transition. Critical reflection on the strengths of the method in addressing the aims of the study, expected and unexpected challenges faced at different stages, and strategies used to overcome those barriers. Recommendations for planning and implementing future co-design workshops.