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CPR, or cardiopulmonary resuscitation, is a crucial skill in first aid that can save lives in emergency situations. It is a hands-on technique used to restore breathing and circulation in someone who has stopped breathing or whose heart has stopped beating. Learning CPR involves understanding the proper techniques for chest compressions and rescue breaths, which are vital during cardiac arrest scenarios.

This skill is essential for anyone involved in first aid, as it directly addresses life-threatening emergencies. While basic computer skills, cooking, and childcare may be valuable in other contexts, they do not equip individuals with the immediate response capabilities needed during a medical emergency, where performing CPR can make a significant difference in the outcome for the victim. Knowing CPR is often a requirement for many professional certifications in healthcare and emergency response, underscoring its importance in first aid training.