what kinds of supporting paragraphs-examples , details , definition, and analysis help define a sentence such as a healthful diet and regular exercise not only improves health , but lowers health care costs .
First, I'd define "healthful diet" and "regular exercise." Give examples of both.
Then I'd show statistics proving that they improve health.
It seems obvious that people in good health need medical services less than people with poor health, thus lowering health care costs.