There are many definitions for a jogger. Someone who "runs" slowly, or doesn't run very far, or runs only once a week. A "new balance" shoe add asks "When does a jogger become a runner." They answer the question with a picture of a runner/jogger exercising in heavy rain with an open road and thunderclouds ahead.
Webster's call on jogging is, "Running for sport or exercise at a slow, regular pace." Which is an insult to the jogging club members that I've seen run 20 times a quarter mile in 80 seconds as preparation for a 10K race.
A writer for "Athletics Weekly" in Britain once said that joggers ran less than five miles at a time, and ran at 8 minutes per mile or slower. My definition is this:
When walking, one foot is always on the ground; the second foot comes into contact with the ground before the first foot leaves the ground. Failure to maintain contact with one foot is (I believe) called "lifting" in race walking terms...and results in the walker becoming a runner.
Running therefore is simply moving "swiftly forward on foot so that both feet leave the ground for an instant during each stride." (Adapted from Webster's)
In running you lift your entire body off the surface of the planet and float briefly above the planets surface. It is this floating sensation which contributes to the pleasure of running.
Society may call you a jogger, but for whatever speed or distance you are intermittently floating over and stepping gently onto the planet, you are in fact a runner. Your friends may think you jogged a 5K or a 10K or a marathon last weekend, but you actually ran that 5k or other race. Unless of course walking is your game, in which case, you'll find a little gentle running to be quite relaxing.
In its calories burned per hour of exercise, the American Heart Association gives the numbers for running at 5.5 and for 10 miles per hour. It also gives the number of calories burned by jogging at 7 miles per hour!
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