One of the most difficult concepts to master as a runner is that you don't need to be running faster, longer or harder every time out to improve. 

In fact, sometimes running just below or slower than your potential in workouts leads to more consistent improvement.

In this week's episode, Coach Jeff is going to discuss the science about why this is so you can fully understand the concept and apply it to your running. 

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This week's show brought to you by:

Mobility Wall

We all know how important foam rolling is for staying injury-free and just plain feeling better for every run.

But, let's face it, many of us skip it because clearing out space on the floor feels like too much work, the pressure is too painful and difficult to control, or you can't seem to hit the right spots.

That's why I was so amazed when I saw the door-mounted foam roller from Mobility Wall. 

The Mobility Wall device mounts to your doorframe in just a few seconds and is easy to move up and down the frame in just a few seconds. 

Not only does this get you off the ground and ready to foam roll in just a few seconds, it also allows you to easily hit muscles in your neck and shoulders that aren't possible with a traditional foam roller. 

Even better, because you're off the ground, you don't have to control gravity to adjust the pressure. You simply use upward and inward pressure, which is much easier to control. The days of painful foam rolling are over. 

If you've been wanting to get more consistent with your injury-prevention work this year, the Mobility Wall foam roller will be a game changer. I can't believe how much more I've been foam rolling since I started using it. 

Plus, we've got a special offer for you. Just go to mobilitywall.com/RTTT or enter RTTT at checkout for 20% off your first order. Plus, it comes with a free app that gives you video instructions on exactly how to hit every area. 

Delta G

Ketones have been one of the most well-researched chemicals when it comes to endurance performance. Their only downside is that it typically takes 2 days of fasting for your body to produce them in quantities that would help your performance

But, thanks to deltaG and collaborations from the US Military and researchers from NIH and the University of Oxford, they've developed a ketone drink that can boost your ketone levels to those seen after 2 days of fasting in just 20 minutes. 

The academic literature on the effectiveness of ketones for running performance is overwhelming. If you want to see more of the research, head to runnersconnect.net/deltag

Plus, use the code RTT20 when you do and you can save 20% on any purchase you make.