For thousands of years, humans have lived barefoot or with a basic level of protection to their soles. Running barefoot
Barefoot Running: Should You or Shouldn't You Run Without Shoes?
Studies tackle the myths of fleet feet
Milind Soman To Run 400km Barefoot: Here's Why He Prefers Running Without Shoes
Barefoot Believers: Running Without Shoes
Is Barefoot Training Smart or Senseless?
By the Skin of Our Feet: Running Barefoot - alive magazine
Science, American legal system confirm barefoot shoes are bullshit - Vox
Run away! Why it really doesn't matter what trainers you wear, Running
Can I Run Barefoot On A Treadmill? Is It Safe? (Yes, Here's Why)