Our continual and automatic adjustments of our movements are in the service of burning the least energy possible.
For example, when you walk at any given speed, you’ll settle into a cadence – the number of steps you take per minute – that minimizes your energy cost at that speed. It’s a remarkable feat of physiology that invites practical questions: Is there any benefit to learning a new running style, for example, if your body has already figured out its most efficient stride?
It’s not clear whether this trait has developed through millennia of evolution, whether we learn these patterns individually as we grow up, or whether we’re constantly learning and relearning them on the fly.