I don't think that's a reasonable way to define the phrase. If "bad diet" is def...

		lukeschlather 27 days ago \| parent \| context \| favorite \| on: Diet, not lack of exercise, drives obesity, a new ... I don't think that's a reasonable way to define the phrase. If "bad diet" is defined in terms of how much exercise you do, then "you can't outrun a bad diet" is a tautology.