We should be able to walk longer based on our average height JohnnyGreig/Getty Images
Humans have lost their swing. Modern humans don't have the ability to swing their hips like chimpanzees or other great apes who walk with their hips. Our strides are shorter that those of chimpanzees even though our legs are longer.
Nathan Thompson, at the New York Institute of Technology, states that we have always believed evolution is directing fossil humans to make their strides more and more long-term. Humans could actually make their strides faster right now,