Is my rib cage large at 31 inches?

A 31-inch rib cage measurement is considered relatively small for adults, as average rib cage sizes typically range from about 30 to 40 inches, depending on factors like gender, body type, and overall physique. However, individual body proportions can vary significantly. If you're concerned about your rib cage size, it may be helpful to consult with a healthcare professional for personalized advice.