The spring in your step is more than just a good mood

Scientists using a bionic boot found that during walking, the ankle does about three times the work for the same amount of energy compared to isolated muscles---in other words, the spring in your step is very real and helps us move efficiently.

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<p><a href="http://www.physorg.com/news128189129.html">The spring in your step is more than just a good mood</a></p> <p>Scientists using a bionic boot found that during walking, the ankle does about three times the work for the same amount of energy compared to isolated muscles---in other words, the spring in your step is very real and helps us move efficiently.</p>