The answer to your question would be that the best example of a paraphrase for the sentence is the following one: To stay healthy, I eat vegetables every day.
The paraphrase of the original sentence is more informal. "To stay heatlhy" stands for the clause "to ensure proper nutrition". It is a shorter clause and it has the same meaning as the original since people who ensure their proper nutrition is sure to stay healthy. Then, "I eat vegetables every day" has the same meaning as "my daily diet" and the noun "vegetables" makes reference to both the beans and the green lettuce.