First-aid is the immediate care provided to someone who is injured or suddenly ill. It aims to preserve life, prevent the condition from worsening, and promote recovery. Basic first-aid techniques include cleaning wounds, applying bandages, and performing CPR. Knowing how to respond in emergencies can make a significant difference in outcomes. First-aid can be administered by anyone, regardless of medical training, but it is beneficial to take a first-aid course to learn proper techniques. Common first-aid supplies include band-aids, antiseptic wipes, and gauze. Being prepared with a first-aid kit can help you respond effectively in emergencies.