Curve at tip of shoes eases movement but may lead to weaker muscles, problems: study. – Brinkwire

The toe of most shoes, especially sneakers, bends ever so slightly upward. While that curve, called a toe spring, can make stepping more comfortable and easier, it may also weaken feet and potentially open them up to some common (and painful) foot-related problems.
That’s the conclusion reached by Harvard evolutionary biologist Daniel E. Lieberman, his former undergraduate student Oliver B. Hansen ’19, and two former post-doctoral researchers, Freddy Sichting and Nicholas B. Holowka, who studie…

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