SK running

Episode 1

Running is the action of rapidly propelling yourself forward on foot. When running, there is a moment when both feet are off the ground (as opposed to walking, when one foot is always on the ground), making it a high-impact exercise.

Running is the action of rapidly propelling yourself forward on foot. When running, there is a moment when both feet are off the ground (as opposed to walking, when one foot is always on the ground), making it a high-impact exercise.

hubhopper

SK running

hubhopper