This entertaining format immerses unhealthy young people who pride themselves on living for the moment, in the world of health-obsessed geriatrics trying to live forever.

In each self-contained episode, a group of four supremely unhealthy young people (in both mind and body) spend a week living in a different ‘active retirement community’ in America. Adhering to strict, daily health and fitness regimes, these inspirational American ‘seniors’ are determined to instil their active living ethos and their love of life on their unhealthy, apathetic young guests.

During their stay, the group encounter macrobiotic diets and intense daily fitness routines; throw themselves into ‘embarrassing’ social activities such as hip-hop granny dance groups and dog agility classes; and give back to the community with challenging ‘do good’ volunteer work. At the end of the week, the youngsters face a final test to assess their progress… can they beat a group of pensioners in a demanding physical fitness competition?

betty Television for BBC Three (2010)