From nurture and nature right ? So the body is the tangible of a person and the mind/soul/spirit i the intangible.
If you eat carcinogens your body gets sick. If you mentally mop up intangible carcinogens your min suffers. It could even die and then you have to kill the body a la suicide.
You can simply eat good food and the body is nourished and grows. But when you take that body to the gym and lift weights you get a few extra points, better stature, even become/appear taller.
Same as the mind. You eat clean daily and it grows but if you mental gym it becomes a wonderful computer. Limitless really.
Btw if the body dies before the mind I believe that’s what is called Legacy, because the intangible essence continues to nourish earth people, while the tangible essence nourishes earth plants 
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Most likely this conversation has veered off from the original posters intentions and I apologise for that.