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Physiology Friday #337: Can Your Wearable Predict When (or How) You’ll Die?
A useful case study illustrates the power of tracking our own physiology over time.
Oct 2
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Brady Holmer
23
12
3
September 2026
Poor, Misunderstood Lactate
It’s not the enemy we’ve made it out to be. But that doesn’t mean we want more of it either.
Sep 29
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Brady Holmer
23
1
2
Physiology Friday #336: What Happens to Mitochondria after 10 Days of Bed Rest?
Use it or lose it is also true for our body’s cellular powerhouses.
Sep 25
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Brady Holmer
34
8
2
Physiology Friday #335: Can Low Carbohydrate Availability Mimic Underfueling?
Even without a calorie deficit, restricting carbohydrates may alter hormonal signals and bone metabolism in endurance athletes.
Sep 18
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Brady Holmer
27
8
2
When It Comes to Biology, Timing is Everything
The body is a clock.
Sep 15
•
Brady Holmer
31
4
1
Physiology Friday #334: Mitochondrial Transplants, Misinterpreted Creatine Studies, and Cardio vs. Weights for Fat Loss
Three physiology rabbit holes I went down this week.
Sep 11
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Brady Holmer
36
14
1
Physiology Friday #333: Can a Cold Plunge Prime Your Workout?
A new study suggests that 10 minutes of cold—or alternating cold and sauna —can temporarily change reaction time, fat oxidation, and exercise heart…
Sep 4
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Brady Holmer
18
3
1
August 2026
Physiology Friday #332: Is a Smaller Heart Less “Trainable”?
Two years of endurance training remodels the hearts of middle-aged men and women similarly, but their gains in maximal fitness came by different routes.
Aug 28
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Brady Holmer
23
1
1
Q&A: Is Walking Exercise?
Debating humanity’s oldest form of activity.
Aug 24
•
Brady Holmer
43
15
7
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
32
6
5
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
•
Brady Holmer
13
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
•
Brady Holmer
27
7
2
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