It was around four to six million years ago when humans first evolved to walk upright.
How does PSA affect your Foot/Ankle : r/PsoriaticArthritis
Barefoot running less energy efficient › News in Science (ABC Science)
Should You Run Barefoot? Here's What the Science Says.
Barefoot living – Wave Lab at the College of Wooster
PeterAttia
Barefoot running survey: Evidence from the field - ScienceDirect
Reading List: Exercised – Why Something We Never Evolved to Do Is Healthy and Rewarding – Quick & Precise Gear Reviews
Barefoot running: an overview of the science, Athletics
Barefoot running survey: Evidence from the field - ScienceDirect
Barefoot living – Wave Lab at the College of Wooster
Londisa's Fitness Tips
The Problem #Running#Barefoot in Canadian Winters? Gotta Wear #Coffins!: – Natural Running Canada
Londisa's Fitness Tips
Foot strength: behind the science
