We are remarkably economical walkers

"But in this study , running was not the most efficient human stride, not by a long shot. It didn’t matter whether a runner landed on his toes,the balls of his feet, or his heels. Running just wasn’t fuel efficient, the data showed. Walking was. By a sizeable margin, walking, especially when the athletes landed first with their heels, was the most physically economical way for human beings to move. This estranges us from much of the animal world. Gazelles rarely walk and don’t do it well . They bound madly , landing on their toes. But humans seem built to plod.“We are remarkably economical walkers, ” the authors concluded. “We are not efficient runners. We consume more energy to run than the typical mammal our size.”"