A digital illustration of a heart rate monitor displaying a red heart rate line on a black background with a grid pattern. The monitor has a small red heart icon in the top right corner. Below the heart rate line, there is a text box with the text 'SHUTTERSTOCK' at the top and a series of numbers and letters at the bottom, including '4 4 4 2 1 1 1 6 9 8 7 6 5 4 3 2 1'.