It is called the Nike Sparq Yo-Yo Intermittent Recovery Test. That’s a mouthful. And it’s a real grind. It involves running. A lot of running. Think 40-meter dash after 40-meter dash after 40-meter dash. One on top of the other, the next at a quicker sprint than the last. With a scant 10 seconds of recovery time in between. The test measu