Athletes make a serious study, of how people move -- even a simple step.
Quote:
http://www.runbare.com/900/the-3-strides-of-barefoot-walking
The Forefoot Stride – While it may look strange, this stride has maximum shock absorption. This stride is responsible for relieving countless numbers of runners and walkers of a myriad of injuries and pain. If you can commit to doing this at least part of the time, your body will thank you. The forefoot stride also promotes great posture and core strength, elongating the body and making you naturally taller. Nature’s healing (dynamic) high heel and calf builder! Last but certainly not least, the forefoot stride is great for ninja-inspired maneuvers best employed for midnight cookie stealing.
I feel that people in shoes will oftentimes place their weight on the heel. Barefoot people seem to favor their toes, as though you are stepping between objects, through tall grass or brush. It seems like a tentative way to walk.