Hello everyone , and welcome to our CPR for beginners course . First of all , does anyone know what CPR stands for ?   Cardiopulmonary resuscitation !   That ’ s right ! We apply CPR in the case of cardiac arrest or pulmonary arrest .   What does that mean ?   Well , basically if your heart stops pumping blood , or your lungs stop pumping air , then we need to get them going again ! That ’ s when we have to apply this procedure . Let ’ s begin ! I need a volunteer .   Me ! Me !   Alright , come here and lay flat on your back . Let ’ s suppose this young woman has stopped breathing . We must lift the person ’ s chin so that we clear a pathway for air to get into the lungs . Then we place our mouth over the other person ’ s mouth and blow air two or three times , like this . 