First aid is immediate medical assistance given to someone injured or suddenly affected by an illness or injury before full medical treatment can be accessed. The objectives of first aid are to preserve life, reduce pain, prevent worsening of injuries, and prepare the individual for medical treatment. Principles of emergency first aid include properly assessing the situation, thoroughly examining the affected person, taking notes on symptoms, diagnosing the problem, and treating the individual until a doctor arrives or they can be transported to a hospital. Following the golden rules of first aid, which include remaining calm, stopping bleeding, preventing shock, and seeking prompt medical care, can help save lives.