Reports on a study which took place at a memory clinic in the south west of England to investigate the reasons why people with dementia and their carers do, and do not, stay physically active. The study also wanted to find out which activities would be acceptable and sustainable for people with dementia and their carers. Five people living with Alzhiemer's Disease and their five spouse carers were interviewed using semi-structured interviews. Barriers and facilitators to physical activity were linked to both the progression of dementia and the relationship between carers and the person with dementia. Other issues identified include time constraints; previous activities undertaken; social acceptance and general attitudes towards dementia. The findings highlight the need to understand the attitudes, routines, previous activities and abilities of people with dementia.