CPR training teaches individuals how to perform cardiopulmonary resuscitation, a lifesaving technique used in emergencies when someone's breathing or heartbeat has stopped. The training covers essential skills, including chest compressions and rescue breaths, to help maintain blood flow and oxygen to vital organs until professional help arrives. Participants learn to recognize the signs of cardiac arrest and how to use an automated external defibrillator (AED) if available. CPR training is often offered by organizations like the American Heart Association or the Red Cross, and it is beneficial for anyone, especially those in caregiving or public service roles.