Unhealthy behaviours not only increase a person's risk of developing health problems over time but they can also hasten disease progression and contribute to greater morbidity and early mortality for those already diagnosed with a condition. Having a chronic condition is often the consequence of an unhealthy lifestyle and this is particularly true for multi-factorial disorders such as type 2 diabetes, coronary heart disease, common mental health problems and chronic obstructive pulmonary disease (COPD). Physical activity is the only intervention that directly Influences cardio-respiratory fitness and is essential to the management of the condition. Peer support is a promising approach for diabetes care. It harnesses the ability and experience of patients with diabetes to support others with the condition. COPD is largely caused by smoking, so interventions promoting smoking cessation at the community level have clear benefits to people with the condition.