“Running is flying*”
*When you walk, one foot is always on the ground. When you run, most of the time you are actually airborne. For example: a 6-foot-tall runner with feet about 1 foot long was found to take 1,250 steps while running 8-minute miles. Thus, while covering 1 mile—5,280 feet—he was in touch with the ground for 1,250 feet and airborne for 4,030 feet.
Put another way, he was in the air for 76% of the time. So don’t think of it as a 10-mile run. Think of it as 7 miles of flying.”