Physiological responses are the body's automatic reactions to various stimuli, such as stress, temperature changes, or physical activity. These responses help maintain balance and ensure survival. For example, when you feel scared, your body releases hormones like adrenaline, which increases your heart rate and prepares you to either fight or flee from danger. Another common physiological response is sweating when you are hot or exercising. This process helps cool down your body by releasing moisture from your skin. Similarly, when you are cold, your body may shiver to generate heat. These responses are essential for keeping your body functioning properly in different environments.