John Armstrong's 'The Art of Preserving Health - A Poem in Four Books' (1744) is a pioneering work that fuses medical knowledge with the elegance of poetic structure, providing insight into 18th-century wellness practices. Written as an enlightening poem, the text canvasses a holistic approach to health, delineating with skilled versification the elements deemed essential for a healthful existence: Air, Diet, Exercise, and The Passions. Armstrong's writings offer more than medical advice; they encapsulate an era's understanding of well-being within the metric constraints of heroic couplets, rich with imagery and a deep appreciation for the visceral interconnectedness of mind and body. Notably, in addressing mental health in 'The Passions,' Armstrong stands as an early advocate for the importance of mental well-being, correlating emotional states with physical outcomes. John Armstrong was not merely a poet but also a physician, a duality that uniquely positioned him to explore the intersection of art and science. His medical background informs the content of his magnum opus, providing an authentic foundation for his assertions. Armstrong's engagement with the humors and temperaments as they relate to wellness reflects the prevailing medical theories of his time, which nonetheless resonate with current understandings of psychosomatic interplay. His literary prowess transforms empirical observations into advice that transcends the ages, offering a poetic manual for health that is as aesthetically pleasing as it is practical. 'The Art of Preserving Health - A Poem in Four Books' remains a valuable tome for readers interested in the history of medicine, poetics, and the early recognition of holistic health. Armstrong's work will enchant readers who delight in the confluence of science and the humanities. Moreover, his attention to mental health as a vital component of overall well-being renders his poem remarkably prescient and of enduring relevance. It is a recommended read for those seeking both literary finesse and a glimpse into the medical ethos of the Enlightenment era.