Yasso 800 @kofuzi
Yasso 800  @kofuzi
Uploaded November 2025 | Updated September 2026, 8 hours ago
Speedwork session about two and a half weeks from Valencia. 10x800m with equal time rest. I was hoping for about 3:05 for each rep and was pleasantly surprised that each one came up a bit faster. I am actually thinking that those giant nitro oxide pills might be making a difference. It just felt like I had bigger lungs today and that, when it came time to dig deep, I could dig deeper.
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I did switch up into spikes for the last two, as I had some spikes I’d been meaning to test. I don’t usually run in spikes so I’m just glad I didn’t hurt myself. But running 800m reps in spikes is a very different kind of running.
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Average for the 800s was right about 3:00, but I use this workout mainly as one last VO2Max session rather than for its predictive value (although it is fun to think about). Frankly, I think I’m closer to 3h05 fitness and not 3hr.
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Disclosures: no one is paying me to make this video, and tbh my daughter is very embarrassed at how much I like this T Swift cover. No one other than my daughter previewed this before it published. No brands are tagged no hashtags used.
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Yasso 800

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