Feet have been evolving for millions of years and are wonders of biomechanical engineering. Your feet support your weight, absorb shock when you jump, walk or run, act as a lever to propel your legs forward, and balance your body as it moves. Each individual foot is a complex machine made up of 26 bones and 33 joints linked by a series of muscles, ligaments and tendons. They are incredibly well suited for moving over the types of terrain humans encountered for 99.9% of their evolution.
The last couple hundred years the conditions feet face have changed the way we move in a tremendously unnatural way. Pavement and other hard surfaces combined with poor footwear designs now make the foot poorly suited for this new world. Modern athletic footwear is designed to cushion the foot and protect the sole from abrasions and wounds. It is NOT designed to optimize the foot's natural performance. These types of footwear which changed our natural stride have resulted in an astronomical increase in leg and lower back injuries.
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