Something that prevents someone from dying or saves a life; critical emergency medical help or water rescue training.
Compound of 'life' + 'saving.' Used since the 1800s, especially for swimming instruction and medical interventions.
Learning CPR is genuinely lifesaving—studies show that people who receive CPR within the first minute have a 90% chance of survival, but only about 5% of Americans know it, meaning you could be someone's hero in an emergency.
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