The “good genes hypothesis” provides an appealing explanation of this finding. It argues that deviation from facial symmetry is due to difficulties arising during development caused by malnutrition, infection or genetic mutation. The degree of facial symmetry may therefore be a marker of health and resilience, indicating how well people cope with environmental or genetic challenges. So we may find facial symmetry desirable in a mate because these qualities prove beneficial to potential offspring.
The heart wants what the heart wants…
I’m not getting stronger – just better muscle definition as my body fat percentage decreases. But we correlate muscle visibility with gym/exercise… We’re also seeing people who have low body fat/BMI, but bad cholesterol, blood pressure, etc because they aren’t triggered to review their health because they aren’t getting fat.