The Beep Test (aka Pacer Test) is used by militaries, schools, and athletes around the world to measure cardio endurance and mental toughness. I decided to try it for the very first time - and it ...

It has been nine months since the beep test, and the Pacers just stopped running. Their season ended Sunday, when the Oklahoma City Thunder bested them in a heartbreaking Game 7 of the NBA Finals.

The beep test, which aims to measure aerobic fitness, can evoke a sense of dread among amateur and elite athletes alike.