Light and moderate are mostly just "activities of daily life" (walking, commuting), and vigorous is whenever you exercise explicitly (running, swimming, speed c

Light and moderate are mostly just "activities of daily life" (walking, commuting), and vigorous is whenever you exercise explicitly (running, swimming, speed cycling, soccer, etc). So it's more like 9 hours of active movement, or 4.5 hours of exercise (40 mins a day).