The physiologist and coach Jack Daniels once filmed a bunch of runners in stride, then confirmed the footage to coaches and biomechanists to see if they could eyeball who was the most efficient. “They couldn’t notify,” Daniels later on recalled. “No way at all.” Famously awkward-wanting runners like Paula Radcliffe and Alberto Salazar sometimes switch out to be terribly efficient. Smooth-striding beauties sometimes end at the back again of the pack.
The act of operating, it turns out, is incredibly complicated. The bob of your head, the rotation of your hips, the angle of your foot—all these aspects and quite … Read More