The September issue of Runner’s World includes my favorite go-to core routine. I like to say it’s just enough to make you feel like you can check off the “I did my core!” box for the day. Including these a few times a week after your runs will help you stay balanced and ward off injury—and it doesn’t take long, so you can do the routine even as your mileage builds toward your fall races.
And for dozens of follow-along videos, see my Core Strength for Real People video series. You can rent or buy any single video, or subscribe to them all for only $9.99—less than half the price of a Pilates class!