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80/20 Endurance

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Training science, coaching, and the 80/20 method — from Matt Fitzgerald and the 80/20 Endurance coaching team.

  • Letters to the Coaches: Daily Workout Order

    David, I sometimes have to do the workout for a particular day in a different order than specified in the plan. For example, today calls for a swim, then a run. Due to my schedule today I need to do the run and then the swim. How big a deal is that? I know some…

    Matt Fitzgerald ·

  • Letters to the Coaches: Alignment of Power Zones and 80/20 Heart Rate

    David, I am pushing through first weeks with Garmin + Stryd to track it. I noticed that my power zone 2 running results in running in HR zone X calculated on your calculator for threshold HR delivered by my Garmin fenix 5. Would it be a clear sign that I overstated my threshold Power? Is…

    Matt Fitzgerald ·

  • Become a Better Pacer with These Simple Games

    Pacing is the art of getting to the finish line of a race in the least amount of time possible given the current state of your body (fitness and fatigue levels, etc.) and external conditions. Generally, this requires that you distribute your effort quite evenly throughout the race and that this evenly distributed effort leave…

    Matt Fitzgerald ·

  • Letters to the Coaches: When and How to Test Zones

    Dear David W, I’m going to buy your plan for the level 3 half marathon plan. I have a race (in Madrid, Spain) on April 8 which by my calculations will have me starting Dec 31/Jan 1… I had a bike wreck in a triathlon a few months ago that resulted in broken bones, concussion,…

    Matt Fitzgerald ·

  • Think a Low Carb, High Fat Diet (LCHF) Might Help Your Running? Think Again!

    One of the hottest areas of research in exercise science lately concerns the effects of low-carbohydrate, high-fat (LCHF) diets on endurance athletes. The latest addition to the literature on this subject comes from a study led by A.J. Heatherly at Middle Tennessee State University and published in Medicine & Science in Sports & Exercise. Eight…

    Matt Fitzgerald ·

  • Letters to the Coaches: Frequency of Hard and Easy Workouts

    Hi Matt, I just finished reading your book 80/20 Running. I liked the basic idea and I also have experienced my biggest fitness gains with mostly slow exercising. But I have one question that I did not find an answer – but maybe there was.. As a triathlete I currently do hard and slow workouts…

    Matt Fitzgerald ·

  • Letters to the Coaches: Triathlon Running Power Plans and Electrolytes

    Hi David, I hope you are well. I was excited to receive your email about the addition of 80/20 ironman plans with running power targets. I’m currently using the level 3 Pace and Power ironman plan, but would love to try the power and power plan. Is there a way to get access to this…

    Matt Fitzgerald ·

  • Letters to the Coaches: Falling in Love

    Dear David, I think I’m falling in love with my mail carrier. I can’t afford all the unnecessary orders I’m making just to have more packages delivered (with signature required!) I need to take this to the next level. How can I ask her out? Sincerely, 1st Class Male ———- Dear 1st Class, I recommend…

    Matt Fitzgerald ·

  • Letters to the Coaches: Trouble Staying in Zone 1 HR

    Hi Guys, I am planning buying 80/20 program (not sure in 1/2 marathon or marathon) but I want to prepare myself for it, as I am out of shape to start it now. On my first run after long break I noticed that pace to HR ratio decreased over the course of 5k, where in…

    Matt Fitzgerald ·