I think he means that they promote the aspects of wellness that are easily observable, because these are the things that an insurer pays attention to when setting a price.
For instance, an insurer won't take any interest in your diet, because that's hard to measure, but they will take a keen interest in your BMI and cardiovascular fitness.
For instance, an insurer won't take any interest in your diet, because that's hard to measure, but they will take a keen interest in your BMI and cardiovascular fitness.