Your long run was yesterday and you can feel it. That ache in the knee from pounding the pavement, the blisters and, if you're really unlucky, the shin splints. It's enough to make you think twice about lacing up the runners again.  

Unfortunately, once you start adding serious volume to your training, this a pretty common occurrence. You start to make progress. You break down. This where the bike comes in. All of the cardio benefits but none of the impact.  

But does cycling actually make you a better runner?

Short answer: yes, as long as the bike supports your running rather than replacing it. Here we'll cover how cycling helps, where it falls short, and exactly how to fit it into your week.