As part of Dr. Rai’s Master’s research at the University of Cambridge, he reviewed evidence from over 4,000 international publications. He concluded that the evidence could be categorised into the following domains NUTRITION EXERCISE SLEEP HYGIENE CHRONIC HEALTH CONDITIONS SUBSTANCE ABUSE MENTAL HEALTH SOCIO-ECONOMICS ADDICTION Once an understanding of how the literature fell into the various domains identified, Dr Rai developed a wellbeing model based upon the research called the Wellbeing Tri-Hazard. This model illustrates the tri-dimensional relationship between the physical, cognitive (mental) and external (psycho-social) domains. These domains are strengthened by the following internal factors: AUTONOMY INTERPERSONAL SKILLS ENGAGEMENT When there is a breakdown in any of the domains a negative effect will influence the other domains, impacting resiliency. The Wellbeing Tri-Hazard Dr Rai’s research and modelling led to the postulation of the definition for wellbeing being;