An estimated 13 % to 36 % of adults who show up to the emergency room or their doctor's office with acute chest pain are diagnosed with costochondritis, or inflammation where a rib bone meets up with the cartilage, according to a 2009 review in the journal American Family Physician. (health.com)
It would seem that hundreds of people doing the plank end up in a hospital every year with a condition known as costochondritis, which is an inflammation of the cartilage that is connecting the ribs to the sternum. (fitnessandpower.com)
Inflammation of the chest wall and of the cartilage that links the ribs to the breastbone (sternum) can cause chest pain, as seen in costochondritis. (thepsoriasisprogram.com)