These images are NOT realistic. Not all women are tall and lean. And not all men are muscular. They have a positive effect on some people, but others have a negative reaction. People who are thin are not always fit.
The answer is:
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crown .
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Happiness is cultivated through behavior. Giftedness, instinct, and talent are already present at birth or developed, but happiness is cultivated and modeled by behavior and surrounding environment.
I believe that a less technical term is known by most people as Fast Metabolism. I do not know the medical term for fast metabolism though. There is also an eating disorder known as Binge Eating.