Walking topic

Walking (also called ambulation) is the main form of animal locomotion on land, distinguished from running and crawling. When carried out in shallow waters, it is usually described as wading and when performed over a steeply rising object or an obstacle it becomes scrambling or climbing. The word walk is descended from the Old English wealcan "to roll". Walking is generally distinguished from running in that only one foot at a time leaves contact with the ground: for humans and other bipeds... full article at wikipedia