Here’s why jump training helps you run more efficiently, according to research.

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’re training for a spring race like the London Marathon, you’ve probably already jumped into your training and started racking up some miles. But have you jumped into your marathon training as ...