Conclusions

Wellbeing involves 'connection'... connection to ourselves, to others and to the environment. We suggest that vagal function provides a key mediator of health and wellbeing, impacted on by activities to promote wellbeing across these domains. There is now good evidence that vagus nerve connects us to ourselves (i.e. 80% of vagal nerve fibres are afferent nerves providing a structural link between mental and physical health, [REF]), to others (the vagus promotes social connection, [REF]), and to nature (vagal function is impacted on by a host of environmental factors). Vagal function may be considered as an index of resilience - underpinned by psychological flexibility \cite{Kashdan_2010} - an important consideration when seeking to build the health and wellbeing of individuals with or without chronic conditions. We encourage psychological scientists to draw upon a combination of strategies, spanning multiple domains of wellbeing, while considering the major theoretical frameworks that have been proposed previously (see table XXX). To date, the discipline of positive psychology has been restricted to enhancing wellbeing by focusing on strategies to promote positive psychological moments. Given that recent research suggests that the impacts of positive psychological interventions are smaller in size than previously reported [REF], we argue that the impact of positive psychological interventions could be improved by integrating interventions that also focus on physical health, which we now know to have important impacts on mental - in addition to physical - health [REF]. Further integration of  interventions that harness the potential of wellbeing promotion within community and environmental domains will likely improve the impact of novel interventions further. It is also important to note that community values and subsequent behaviours can be influenced through sociostructural factors such as governmental policies, a consideration highlighted in our original GENIAL model \cite{Kemp_2017} and a topic we discussed in section \ref{225494}. Researchers have argued for example \cite{Bratman_2019}, that diverse stakeholders including city planners, landscape architects, and community-based organizations might be able to modify the natural environment in ways that promote mental health of communities. Intriguingly, XXX Provision of natural environments to foster wellbeing at the community level may also contribute to the reduction of inequalities, that will have further indirect impacts on wellbeing.  
Finally, our updated model extends beyond the individual and community, to incorporate the broader impacts of the environment. Mindful of previously proposed social ecological theories [REF] and Glenn Albrecht's work on 'Earth Emotions' \cite{albrecht2019}, we emphasise that the individual is intimately connected to the community and environment in such a way that XXX