A high refresh rate refers to the number of times a display updates its image per second, measured in hertz (Hz). For example, a monitor with a refresh rate of 120Hz refreshes the image 120 times each second. This results in smoother motion and improved clarity, especially during fast-paced activities like gaming or watching sports. Higher refresh rates can reduce motion blur and make animations appear more fluid. Many modern devices, including gaming monitors, smartphones, and televisions, offer refresh rates of 60Hz, 120Hz, or even 240Hz, enhancing the overall viewing experience for users.