/oss/taxonomy/term/6861/all en /oss/article/you-asked-general-science/will-running-turn-my-toenails-purple <p>About two weeks ago, hundreds of runners lined up at Parc Jean Drapeau to run the <a href="https://canadarunningseries.com/21k-de-montreal/">Montreal 21K race</a>. But beneath neon-coloured running shoes and Nike sports socks, you would be surprised to learn how many of these runners have black toenails or are missing a toenail completely.</p> Fri, 05 May 2023 10:00:00 +0000 Maya McKeown, B.Sc. 9502 at /oss