Human emotions are complex psychological states that involve a subjective experience, physiological response, and behavioral or expressive response. They play a crucial role in how individuals interact with others and navigate their environment. Common emotions include happiness, sadness, anger, fear, and surprise, each serving different functions in human behavior and social communication. Emotions are influenced by various factors, including biological processes, cultural context, and personal experiences. They can affect decision-making, relationships, and overall well-being. Understanding emotions is essential for improving emotional intelligence, which helps individuals manage their feelings and respond effectively to the emotions of others.