We are constantly exposed to substances that are harmful to our bodies, such as toxins in food, alcohol, exhaust fumes, and cosmetics. On top of that, there are medicines and other chemicals. How does the body deal with these?

Even with high-tech running shoes, lots of people still suffer injuries. Barefoot running could be the solution! Knee, hip, and back injuries are often caused by an incorrect gait, which running shoes tend to exacerbate. So should we run barefoot like our ancestors?