Weegy: Most joints in the body form FRIST-CLASS levers.
User: Which three body systems benefit from good posture?
A. Endocrine, digestive, and circulatory
B. Respiratory, digestive, and urinary
C. Digestive, circulatory, and respiratory
D. Urinary, respiratory, and endocrine
Weegy: Digestive, circulatory, and respiratory systems benefit from good posture.
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