How Runna, an AI-powered virtual coaching app acquired by Strava in 2025, toned down its aggressive training plans following reports of injuries from some users (Nicole Nguyen/Wall Street Journal)

Nicole Nguyen / Wall Street Journal: How Runna, an AI-powered virtual coaching app acquired by Strava in 2025, toned down its aggressive training plans following reports of injuries from some users   —  More people are using the app to train for marathons.  Its makers are adding ways to tone down plans some users found too aggressive.