Andy Renfree 🇺🇦 (@AndyRenfree) header
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PhD, Running, armchair philosophy, Metallica 〓〓

Hayle, England
Joined August 2011
Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)Photo by Andy Renfree 🇺🇦 (@AndyRenfree)
As I've had plenty of time on my hands recently, I've spent some of it tidying up and editing bits of my blog. Sport science, running, armchair philosophy and more... andrewrenfree.wordpress.com/
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Great analogy!
Zone 2 is like vegetables: the best thing you can eat, but not the first to sort out. A salad leaves you hungry. First, enough training stimulus. Then, the best zone for it. With 4 hours a week, that's intervals. More in my book, The Nature of Training: a.co/d/0dkNdShb
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Andy Renfree 🇺🇦 retweeted
New Research Topic titled "How does it feel?: Objective Physiological and Subjective Perceptual Data in Exercise Prescription" launched in @FrontPhysiol in collaboration with @AndyRenfree and Mykolas Kavaliauskas. Submissions are welcome! More info: frontiersin.org/research-top…
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Andy Renfree 🇺🇦 retweeted
"The longevity industry is a goldrush without gold." and other strong words about 2 delusions @TheLancet thelancet.com/journals/lance…
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Andy Renfree 🇺🇦 retweeted
The Fastest Man in the World Every Year (100m Sprint) | 1961–2026 🏃‍♂️
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Pacing is not about knowing the correct pace. It's about knowing when the correct pace has changed.
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Andy Renfree 🇺🇦 retweeted
Proper interval training is like being an artist. You have all of these variables (speed, recovery, rep length, set length, pacing, etc.) and each twist, changes the stimulus a bit. You can do 100m repeats that work on speed or aerobic endurance. Be an artist, get innovative.
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A training zone isn't a physiological reality. It's a model. Useful models can help us make decisions. They shouldn't become the thing we're trying to train.
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There is no optimal training programme. There are training principles. There are useful evidence-based strategies. There are better and worse decisions. But there isn't a universal recipe.
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Andy Renfree 🇺🇦 retweeted
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