No Fibs — Honest Limitations
The "8 glasses of water a day" rule is not strongly evidence-based — it's a rough heuristic that stuck. Real needs vary with body size, climate, and activity, and food provides water too. Better honest guides are thirst and urine color (pale yellow = fine). Tracking can build awareness, but chugging water past thirst carries a small but real risk of overhydration. This is a habit tool, not medical advice.