Introduction and Conceptual Framework: Defining Well-being in Psychological and Physiological Contexts: The concept of well-being, particularly in the context of behavioral medicine and public health, requires a robust, multidisciplinary definition that extends beyond mere absence of disease. This analysis defines well-being through three interrelated domains: subjective well-being (SWB), objective mental health metrics (e.g., symptom severity for anxiety and depression), and measurable physiological parameters (e.g., heart rate, blood pressure, and neuroendocrine function). Emotional and physiological homeostasis are central to this framework, representing the body’s ability to efficiently adapt to stressors. Reading, often categorized as a passive leisure activity, is increasingly being contextualized in the scientific literature as a potent, accessible behavioral intervention. Research demonstrates that engaging with text exerts significant influence on the autonomic nervous system and fundamentally impacts long-term cognitive architecture. This report establishes that the act of reading is not simply a cognitive process but a dynamic interaction capable of modulating stress responses, providing clinical efficacy in mood disorders, and building resilience against neurodegenerative decline.