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Walking (also called ambulation) is one of the main gaits of locomotion among legged animals, and is typically slower than running and other gaits. Walking is defined by an 'inverted pendulum' gait in which the body vaults over the stiff limb or limbs with each step. This applies regardless of the number of limbs - even arthropods with 6, eight or more limbs.

In humans and other bipeds, walking is generally distinguished from running in that only one foot at a time leaves contact with the ground and there is a period of double-support. In contrast, running begins when both feet are off the ground with each step. (This distinction has the status of a formal requirement in competitive walking events, resulting in disqualification at the Olympic level.) For quadrupedal species, there are numerous gaits which may be termed walking or running, and distinctions based upon the presence or absence of a suspended phase or the number of feet in contact any any time do not yield mechanically correct classification. The most effective method to distinguish walking from running is based on the percent of the stride in which a foot is in contact with the ground (averaged across all feet); defining a walk as greater than 50% contact corresponds well with identification of 'inverted pendulum' mechanics via force plate measurements.

The average human child achieves independent walking ability around 11 months old. The word walk is descended from the Old English wealcan "to roll".

For humans, walking is the main form of transportation without a vehicle or riding animal. Although walking speeds can vary greatly depending on factors such as height, weight, age, terrain, surface, load, culture, and fitness, the average human walking speed is about 3 miles per hour. Specific studies have found pedestrian walking speeds ranging from 4.11 to 4.33 feet per second (2.8 mph ~ 2.95 mph | 4.51 km/h ~ 4.75 km/h) for older individuals to 4.85 to 4.95 fps (3.3 mph ~ 3.38 mph | 5.32 km/h ~ 5.43 km/h) for younger individuals. A pedestrian is a person who is walking on a road, sidewalk or path.
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review by . May 25, 2011
posted in Green Living
Walking is that simple, basic, everyday human function in which you place one foot in front of the other in order to propel yourself forward. It's something that absolutely everyone who has ever lived knows how to do, and the VAST majority of the human population does it or at the very least has been capable of doing it in their lifetimes. It's useful as a means of transportation and exercise, especially if you have an eye out for the better welfare of both the environment and your bank account. …
Quick Tip by . October 26, 2010
posted in Green Living
It is my favorite form of locomotion. I wear a pedometer like I would a piece of treasured jewelry. No longer a step saver but a step taker inside, outside, all around. Of course add some music and the walking can get fun and a bit sassy and like MarySoderstrom says "You don't need a healthclub membership..."
review by . March 28, 2010
posted in Healthy Lifestyle
I walk every chance I get.
For as long as I can remember I have loved to walk.  Even when I was a young man I never cared much for running or jogging.  For one thing, I always found running to be very hard on my feet, ankles and knees.  Likewise, I lacked the wind and physical stamina to either run or jog for more than a few minutes at a time.  I found that walking was more my speed.       When I was in my late 30's I weighed somewhere in the vicinity of 230 …
Quick Tip by . June 05, 2010
posted in Green Living
You don't need a healthclub membership if you walked everywhere!
Quick Tip by . June 14, 2010
posted in Life with Dogs
Make sure you've got a good solid leash and plenty of poop bags when you're on a walk with your pup(s)
Quick Tip by . May 08, 2010
posted in Healthy Lifestyle
I usually take a walk once a day with my dog. She can go about a 1.5 miles and it's a nice way to get fresh air and relax.
Quick Tip by . March 26, 2010
posted in Healthy Lifestyle
My favorite thing, ever. Miss doing it more before I moved to LA!
Quick Tip by . March 26, 2010
posted in Healthy Lifestyle
I try to walk as often as I can. Bonus points for nice scenery & good people/animal watching!
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