This article examines forest bathing — Shinrin-Yoku, the Japanese practice of immersive sensory engagement with forest environments — through current clinical and research evidence. Five categories of scientifically documented health benefits are examined: immune system enhancement through phytoncide exposure (tree-derived volatile organic compounds that measurably increase natural killer cell activity and count for up to 30 days following a single two-day forest immersion); cortisol and sympathetic nervous system reduction (parasympathetic activation and stress hormone normalisation documented by multiple Japanese and Korean studies); cardiovascular health improvement (blood pressure, heart rate, and arterial stiffness reduction); psychological health benefits (anxiety, depression, and rumination reduction); and cognitive restoration (attention, working memory, and creative capacity improvement through Attention Restoration Theory). The Ayurvedic concept of Prakriti — the healing intelligence of the natural world — and the traditional Indian understanding of Vana (forest) as a sacred therapeutic environment are presented as the ancient framework that anticipated what Shinrin-Yoku research has documented.