Dr. Zach Thomas is a board certified Podiatrist and Foot and Ankle Surgeon who runs the YouTube Channel "Foot Doctor Zach" 

Zach became interested sneaker and human performance after playing tennis in college and then getting a  front row view to the marvel that is the human foot in sports during podiatric medical school and surgical residency.
  
This site and social channels focuses on the foot and sneaker's role in sports performance.