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The Wall Street Journal
wsj.com
did:plc:i3fhjvvkbmirhyu4aeihhrnv
More people are signing up for marathons—and using the coaching app Runna. Some got hurt by following its plans, writes columnist Nicole Nguyen. Its maker is now adding ways to dial back its training.
https://on.wsj.com/4ttCVI4
2026-02-08T21:02:19.554Z