It used to be that tying someone’s shoes together was a nasty prank, but now it’s a performance-enhancing feat of bio-mechanical engineering. A team of researchers and engineers at Stanford University have developed a radical new method to increase the running efficiency of humans: they put a rubber band between a pair of shoes. This might not sound like a feat of modern technology, but the science behind it is actually quite interesting. According to the team’s research paper, we’re poorly engineered for the task of running: Human running is inefficient. For every 10 calories burned, less than 1 is needed…
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