The Vitalized Day Protocol: an integrative, multi-disciplinary architecture for sustained human physical and cognitive performance

A structured narrative review (preprint, not peer reviewed) from Vitalized Lab. Human performance is usually studied one system at a time. This review asks whether the existing literature supports a single, internally coherent daily protocol. Evidence was assembled across ten domains (chronobiology, vagal physiology, mitochondrial bioenergetics, neurotrophin biology, the gut-brain axis, haemodynamics, glymphatic clearance, behaviour change, flow and pressure performance, and the routines of high achievers) and examined through four lenses: neurobiology, systems biology, behavioural science and data science. The strongest evidence concerned regular sleep timing, light exposure, habitual movement and cardiorespiratory fitness, strength training, dietary quality and social connection. Popular practices such as cold exposure, breathwork variants, nootropics and rigid fasting windows had weaker or more conditional support. The resulting Vitalized Day Protocol (five fixed three-hour blocks, each opened by the same 10-minute bout, with Foundation, Acceleration and Peak layers) was audited element by element: of 73 class assignments across 54 elements, 25 were directly supported, 22 plausible extrapolations, 8 behavioural cues or rituals, and 18 contested. Unsupported mechanisms were removed from the claims. Contraindications, seven falsifiable hypotheses and a validation design are stated. All 282 references were verified against PubMed and Crossref on 3 November 2026; the verification log is at https://osf.io/c2nkr. Conflict of interest: the author is the founder of Vitalized, which develops health-habit apps. AI use: Claude (Anthropic) assisted with literature search, drafting and reference checking; the author verified all content. Not medical advice.