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Q&A: Is Walking Exercise?
Debating humanity’s oldest form of activity.
6 hrs ago
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Brady Holmer
21
1
3
Physiology Friday #331: High-Intensity Exercise Sends a ‘Healthier” Molecular Signal to the Body
Why the “secretome” may be key to understanding the long-term benefits of hard workouts.
Aug 21
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Brady Holmer
30
5
4
Is Ventilation the Missing Metric for Endurance Training? | Tymewear Co-Founder Arnar Larusson
Why breathing can help you train smarter, and how to use it.
Aug 19
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Brady Holmer
11
4
1
1:05:40
Physiology Friday #330: Does Burning More Carbohydrates Make You Hungrier?
Changing fuel use during exercise doesn’t appear to change what you eat after.
Aug 14
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Brady Holmer
25
6
1
Q&A: How I Fuel My Training
Fasted morning runs, afternoon doubles, gels, and the post-workout nutrition study that changed what I do.
Aug 10
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Brady Holmer
36
21
1
Physiology Friday #329: Does a Higher VO₂ max Require the Heart to Pump More Blood?
Runners consume more oxygen while asking less of their heart, offering a surprising lesson in how endurance fitness is built.
Aug 7
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Brady Holmer
29
8
4
Is Running Twice a Day Worth It?
The benefits of "doubling."
Aug 5
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Brady Holmer
51
16
3
What If the Plural of Anecdote Is Data?
Personal experience isn’t the strongest form of evidence. But sometimes, it's where science begins.
Aug 3
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Brady Holmer
20
3
3
July 2026
Physiology Friday #328: Why Heat Gets Harder with Age
A six-hour extreme-heat experiment suggests that our ability to control core temperature declines gradually across adulthood, and being fit only partly…
Jul 31
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Brady Holmer
18
2
2
How I Use Ketones
A framework for recovery, performance, and focus.
Jul 29
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Brady Holmer
7
2
26:32
Physiology Friday #327: Is Under-Fueling Also a Carbohydrate Problem?
Keeping carbohydrate availability high can soften some hormonal effects of low energy availability—even when the calorie deficit stays the same.
Jul 24
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Brady Holmer
25
4
2
A Joined a Neuroscientist to Discuss 'Marathon Brain,' Exercise for Longevity, and the Latest Science on Sleep
My appearance on The Neuro Experience.
Jul 20
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Brady Holmer
14
1
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