You can run all the miles on the road and do as many speed sessions on the track that you want, but the secret to getting that next PR likely comes in the gym. And we don’t mean more treadmill runs.

If you recently ran a marathon or two, Berdan recommends a couple shakeout runs the week immediately after, followed by at least a full week off—no running at all. Even some pros take a full month off ...

It’s not just you—more and more people are taking up running: Fitness-tracking app Strava saw a four percent increase in runs ...