Since I began marathon running in 2011, I’ve lived by a training plan, fed to me online by a coach. There’s been order to my days and weeks. ... ‘You have to get a knee scooter,’ she said.

Strength training can be one of the best treatments for chronic knee pain. Here’s how to do it safely. By Hilary Achauer Caitlin Berzok used to be scared of strength training. She occasionally ...