Pectus excavatum is an abnormal formation of the rib cage, where the distance from the breastbone (sternum) to the backbone (vertebrae) is decreased. It gives the chest a caved-in appearance. It is a congenital abnormality caused by excessive growth of the connective tissue joining the ribs to the breastbone. This causes an inward malformation of the sternum. If the case is severe your heart of lugs may be affected making exercise difficult. It can be a case of familiar pectus excavatum, isolated effect, Marfan’s syndrome or Rickets. If you haven’t had any problems so far there is no reason to be concerned. Should you develop trouble breathing, notice decreased exercise tolerance, develop chest pain, notice redness, swelling or discharge from the area then you should see medical professional. Although this condition can be surgically repaired, surgery is advised only if you have difficulty with exercise for instance.