Presentation reviewing the most recent advances in how to develop and test behavioural interventions, with an emphasis on new frameworks which have been proposed. These are then discussed in terms of two research streams in adult patients with asthma which have used these frameworks. The first stream has culminated in a behavioural randomized controlled trial assessing a structure exercise intervention (66 patients randomised to exercise or usual care). The second stream describes the development and impact of a behavioural weight management intervention (20 patients all undergoing a version of the intervention).