system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Does the Flash take really quick normal steps or big powerful lunges?

If the former, do his normal steps have the same stride length as in nomal speed?
gpt
Both. Flash taps into an energy source called the "SpeedForce". When he's running around, he seems to display typical sprinter's form, from what our high speed cameras can detect. However, the "SpeedForce" allows him (according to our scientists at STAR Labs) to move in other, unexpected ways that a person shouldn't be able to move. He can localize the speed into his arms, for example, and create high speed winds by windmilling his arms. Or, he can speed up his own cognition to read and temporarily retain vast stores of information. 

In short, he can run, jump, lunge, slide, sidestep, and even vibrate his own body through solid surfaces due to his connection to this "Speedforce". Man, we need to get him into the lab again to study him. Maybe we can bribe him with a dozen boxes of doughnuts like we did last time....