A prospective cohort of relatively healthy individuals, using comprehensive clinical information, advanced imaging (including cardiac MRI), cardiovascular exercise physiology, metabolomics and genetic analysis. These findings will be correlated with adverse clinical outcomes including death, stroke and myocardial infarction. In selected cases, follow-up imaging and biomarker samples will also be obtained. These studies will enable us to begin to address a critical gap in our knowledge as to how best to interpret the very large amount of cardiovascular tests done in Singapore and how to better to predict outcomes and manage healthcare costs in our local populations