Some scientists struggle to understand walking, as is evident in this study:
“Walking Fast—Ranking High: A Sociobiological Perspective on Pace,” A. Schmitt and K. Atzwanger, Ethology and Sociobiology, vol. 17, no. 5, September 1996, pp. 451–62. The authors explain [AIR 15:5]:
“We hypothesized that habitual fast walking might be a means to acquire and/or to display status”
BONUS: A look back at “hopped up about walks“