What is the predicate of my good health?

Good health. "I am in good health", in which I am the subject and good health is the subject-predicate phrase. Predicate is the statement or explanation of the subject, pointing out that the predicates of "what to do", "what to be" or "how to do it" are composed of verbs, and predicates can be divided into simple predicates and compound predicates according to the complexity in the sentence.