What is CPR?

CPR stand for Cardio (heart). Pulmonary (lungs). Resuscitation (living again).
CPR can save a life and reduce the risk of brain damage from loss of oxygen.
The signs of a heart attack: chest pain-pressure, short of breath, sweaty cool, look sick.
What should you do?
Loosen clothes, and call 911.If they lose consciousness, lay victim on the floor, After that, there are three steps of CPR you must to do: look, listen, feel, and you start CPR.
You give two breathing to force air into the lungs then you push hard on the chest of victim thirty times if the victim is unconscious, you still continue two breathing and push hard on the chest thirty times until you see victim become conscious. You have saved a person's life!