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Introduction: Dinacharya, or daily routine, is a foundational concept in Ayurveda described in classical texts (Charaka Samhita, Sushruta Samhita, Ashtanga Hridaya). It emphasizes the synchronization of human activities with circadian rhythms, balancing the doshas, enhancing physical and mental health, and preventing disease. With the increasing prevalence of lifestyle disorders due to irregular schedules, stress, and urbanization, revisiting Dinacharya holds relevance in modern healthcare. Methods: A systematic review was conducted using classical Ayurvedic texts and modern scientific databases (PubMed, Scopus, Web of Science, Google Scholar). Keywords included “Dinacharya,” “Ayurveda daily routine,” “circadian health,” and “lifestyle disorders.” Inclusion criteria included classical descriptions, preclinical and clinical studies linking Dinacharya with health outcomes. Exclusion criteria included anecdotal or non-peer-reviewed sources. Results: Classical texts prescribe structured daily activities including waking, oral hygiene, bowel evacuation, exercise, meals, work, rest, and sleep in alignment with dosha cycles. Modern evidence supports the health benefits of circadian-aligned routines, highlighting improvements in metabolic, cardiovascular, and mental health parameters. Implementation of Dinacharya-based interventions in contemporary lifestyle demonstrates potential in preventing obesity, diabetes, insomnia, and stress-related disorders. Discussion: Dinacharya integrates preventive, therapeutic, and lifestyle medicine. While classical guidance provides detailed routines, modern lifestyle constraints challenge adherence. Adaptation, awareness, and individualized planning can facilitate integration. Further clinical trials and observational studies are needed to validate efficacy, feasibility, and health outcomes. Conclusion: Dinacharya is a scientifically relevant approach to holistic health in modern lifestyles. Structured daily routines aligned with circadian rhythms promote physical, mental, and social well-being, providing an evidence-based framework for preventive healthcare.

KEYWORDS: Ayurveda, Circadian rhythm, Dinacharya, Lifestyle, Preventive healthcare