Spring in your step?
Jun 03, 2020
1 minute
![cosmosmag200601_article_010_02_01](https://article-imgs.scribdassets.com/2ecxkbtfls8e2zg4/images/file48V1ZIMA.jpg)
A spring-powered device attached to human legs could, in theory at least, boost sprinting speed by more than 50% without external energy input, according to a new study. Amanda Sutrisno and David
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