摘要
<正>Barefoot running has been around for millions of years,and it is safe to presume that for most of that time,the practice occasioned little interest.Our ancestors ran barefoot because they had no shoes.When footwear was first invented during the last 40,000 years(no doubt at different times and in different places),shoes were by necessity minimal—essentially sandals and moccasins—designed to protect the sole of the foot but lacking any of the sophisticated features and materials present in