Jack would swallow again and take a second before replying. "Well, the thing about being a speedster is that your whole life becomes fast and slow. My powers come from the Speedforce and from myself. I move really fast. I age really slowly. I can think, see, and do everything at super speed. But my body is changed too, so my metabolism can kill a normal person. If I don't eat enough, I could become really weak and pass out from exertion." He would explain. "It's one of my few weaknesses I guess. Better than Kryptonite though, right?" He would say with a smile.