SmartCoach2 from Claude code for Smart2

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World's Fastest Marathons

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  These Are the World’s Fastest Marathoners Here’s a complete list of the world record-holders and all-time top 26.2-mile runners. by  Scott Douglas Updated: Sep 21, 2025 6:44 AM EDT Saved! Listen  (10 min) Michael Reaves // Getty Images 4 min read Below you’ll find tables detailing several  marathon  superlatives: the 10 fastest marathoners in history on record-eligible courses; the 10 fastest American marathoners in history on record-eligible courses; the 10 fastest performances on record-eligible courses; the progression of the world records since 1988. Note that we said “on record-eligible courses.” That’s why  Eliud Kipchoge’s 1:59:40 in Vienna isn’t on the list  from 2019. That time doesn’t count for record purposes because standard competition rules for pacing and fluids weren’t followed. Similarly, times from the Boston course can’t be on the list, because of its point-to-point layout and too-great net elevation drop. Related Story How to ...
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Sodium bicarb jason fitzgerald

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  Hey fellow runner, If you’ve been following elite running at all the past year or two, you know there’s a controversy over a “new” product called bicarb. Along with super shoes, bicarb has been attributed to the recent assault on world records. But, does it really work? Or is this just another “overhyped” product beetroot juice was a few years ago? Well, that’s what we’re going to explore in this article. We’ll look at the research and… Breakdown what exactly bicarb is and what it’s theorized to do Look at the early research and why it’s only now becoming popular Dig deep on the more recent scientific literature to see if it has any merit And finally provide some practical strategies should you want to try it. Brought to you by... Pique Nandaka: The Ultimate Coffee Alternative Designed to Power Your Runs Most so-called “coffee alternatives” don’t actually provide functional energy. But Nandaka is built for endurance. Unlike coffee, which spikes your energy and leaves you crashing...
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Alex Hutchinson Zone 2 Training

I have  an article in today’s  New York Times  about so-called “zone 2” exercise. It’s a hot topic these days thanks primarily to Peter Attia’s promotion of it, and my aim in the article is to offer an accessible introduction to what it is, why it’s supposed to be good for you, and what the current state of the evidence is. I hope you’ll head over and give it a read (using  this gift link  if you’d like).   To write it, I spoke to many more scientists beyond those quoted, and had a chance to dig into some of the nuances of the topic in a way that I couldn’t fit into the article. So I’d like to use this newsletter as a place to “empty my notebook” and share a few additional thoughts about zone 2. This gets a little detailed and technical, so start with the  NYT  article and proceed with caution!   Why are mitochondria so important for health?   In the article, I mention Iñigo San Millan’s belief that mitochondria are an early warning sign...
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