Hypothermia - A medical emergency that occurs when your body loses heat faster than it can produce heat, resulting in a dangerously low body temperature., CPR - An emergency lifesaving procedure performed when the heart stops beating. It can double or triple the chances of survival after cardiac arrest. Also known as cardiopulmonary resuscitation., Lifeguard - An expert swimmer employed at a beach or swimming pool to protect swimmers from drowning or other accidents and dangers.,

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