Andrew seemed to get really excited, and as soon as he heard it started to run. His speed was good, and his endurance was too. He once remembered when the cops chased him across the entire city. While obviously he had pauses then while he hid and couldn't keep up his full speed, that was a city, it had moving obstacles, places to climb, and other things that a simple gym didn't.  He also had to walk home all the way back across the city. But he didn't do that alone, back then, he had his brother and he was with him. His daydreaming suddenly stopped, and he just started to full-on sprint at a speed not even he could keep, and he got like a quarter of the way across the gym from where he was and fell over in exhaustion.