Madeline Rundlett and Jeremy Schaap May 5, 2026, 07:00 AM ET When the North Carolina coaches saw the metrics, they assumed the energy tracking monitor was broken. Nobody can run that hard for that long. No one can maintain that kind of output. But the device wasn't defective. It was working perfectly. So what was the explanation? Exactly what they thought it might be. Chloe Humphrey. "It measures distance, it measures high-speed running," Tar Heels coach Jenny Levy said. "So we usually see in our games about 12 to 15% of your running is about high-speed running. It usually was about 12%. In practice, Chloe was hitting like 18 to 20% of her movements were high-speed running, which is really demanding. Accels, decels and sprints. So her distance was above everybody. Her high-speed running was double everybody. Like, we were like, 'What in the world is going on?' And we just hadn't seen it. And we've had a lot of great players, [but] we hadn't seen that work rate before.…