So a symbol of health is a sign of progress or lack thereof, not progress itself. It is a landmark of health, not the landscape of health itself. All that a symbol that comes from doing a 'healthy behaviour', such as walking the treadmill, provides is - a picture of health on a scale. A non-professional human being approximates the reading on this scale in experiential terms quickly in terms of 'lousy', 'ok', 'good', 'great, etc. .