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Most Pain Solutions Work Against Your Body. This One Works With It.
Field Notes

Most Pain Solutions Work Against Your Body. This One Works With It.

There's a Reason Certain Plants Kill Pain. Your Body Built the Door, They Hold the Key.

By Dr. Sarah Chen •Jun 27, 2026 •7 min read

Positive Thinking Is Making Your Anxiety Worse — Here's What the Research Actually Supports
Field Notes

Positive Thinking Is Making Your Anxiety Worse — Here's What the Research Actually Supports

5 min · Jun 21
I Tracked My Cortisol and Testosterone for 90 Days — Here's What Stress Actually Does to Your Hormones
Field Notes

I Tracked My Cortisol and Testosterone for 90 Days — Here's What Stress Actually Does to Your Hormones

6 min · Jun 21
Why Does Your Gut Act Up Even When You Eat Clean? The Answer Involves Your Body Clock
Field Notes

Why Does Your Gut Act Up Even When You Eat Clean? The Answer Involves Your Body Clock

4 min · Jun 20
The Feed

Latest Research

The Recovery Industry Is Lying to You About Ice Baths -- What the Research Actually Found
Field Notes

The Recovery Industry Is Lying to You About Ice Baths -- What the Research Actually Found

Cold water immersion is everywhere in fitness culture. The feeling of recovery it produces is real -- but...

By James Calloway · 3 min
This Marker Predicts Heart Disease Better Than LDL — and Most Doctors Never Test It
Field Notes

This Marker Predicts Heart Disease Better Than LDL — and Most Doctors Never Test It

LDL cholesterol has defined cardiovascular risk for 40 years — but it misses roughly 30% of patients at...

By Test Admin · 5 min
Your Gut Bacteria Decide Your Mood Before Your Brain Does — and the Science Is Stranger Than You Think
Field Notes

Your Gut Bacteria Decide Your Mood Before Your Brain Does — and the Science Is Stranger Than You Think

The gut-brain axis is real, measurable, and profoundly underused in mental health treatment. Here's what...

By Nathan Ellsberg · 4 min
Burnout Is Not One Thing — The Three Types Have Completely Different Treatments
Field Notes

Burnout Is Not One Thing — The Three Types Have Completely Different Treatments

Treating frenetic burnout like underchallenged burnout makes things worse. Three distinct types, three...

By Dr. Mara Lindqvist · 6 min
Why Does Your Heart Rate Variability Drop Under Stress? The Answer Changes How You Train
Field Notes

Why Does Your Heart Rate Variability Drop Under Stress? The Answer Changes How You Train

HRV apps show you a number. What they skip is the mechanism — and the mechanism changes everything about...

By Tyler Okonkwo · 5 min
I Ran for Three Years and Got Slower — Here Is What the Research Says About Why
Field Notes

I Ran for Three Years and Got Slower — Here Is What the Research Says About Why

Most recreational athletes train exclusively in the grey zone between easy and hard, which drives...

By Dr. Priya Nair · 3 min
Chronic Stress Is Tanking Your Thyroid — And Your TSH Looks Fine
Field Notes

Chronic Stress Is Tanking Your Thyroid — And Your TSH Looks Fine

40% of patients with hypothyroid symptoms have normal TSH. Cortisol suppresses TRH, blocks T4-to-T3...

By James Calloway · 2 min
How to Actually Build Muscle: What 30 Years of Hypertrophy Research Shows
Field Notes

How to Actually Build Muscle: What 30 Years of Hypertrophy Research Shows

Volume, protein, rest intervals, frequency -- the science of muscle growth is clearer than most coaches...

By Dr. Mara Lindqvist · 5 min
On the Radar

Trending Now

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Your Morning Cortisol Spike Is Not the Problem -- Here Is What Actually Breaks the Rhythm
Field Notes

Your Morning Cortisol Spike Is Not the Problem -- Here Is What Actually Breaks the Rhythm

5 min · Jun 16
The 4 Foods Shown to Seal a Leaky Gut -- and the 3 That Consistently Damage It
Field Notes

The 4 Foods Shown to Seal a Leaky Gut -- and the 3 That Consistently Damage It

5 min · Jun 15
Zone 2 Training: Why Going Slower Gets You Fitter, Faster
Field Notes

Zone 2 Training: Why Going Slower Gets You Fitter, Faster

6 min · Jun 15
How Exercise Repairs a Damaged Heart — What 63 Clinical Trials Found
Field Notes

How Exercise Repairs a Damaged Heart — What 63 Clinical Trials Found

4 min · Jun 14
Why Resting Heart Rate Predicts Your 10-Year Death Risk Better Than Cholesterol
Field Notes

Why Resting Heart Rate Predicts Your 10-Year Death Risk Better Than Cholesterol

4 min · Jun 14
Why Your Gut Bacteria Are Starving (And What They Need)
Field Notes

Why Your Gut Bacteria Are Starving (And What They Need)

5 min · Jun 13
Editor's Pick

The Spotlight

You're Probably Not Overtrained -- You're Underrecovered: What Sports Science Shows
Field Notes

You're Probably Not Overtrained -- You're Underrecovered: What Sports Science Shows

The clinical diagnosis of overtraining syndrome is rare. Most athletes hitting a wall are dealing with something fixable -- and the solution is not less training.

By Nathan Ellsberg •Jun 13, 2026 •4 min read

Read the full story →
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Deep Dives

Your Gut Has 100 Trillion Bacteria -- Here Is What They Are Actually Doing to Your Brain
Field Notes

Your Gut Has 100 Trillion Bacteria -- Here Is What They Are Actually Doing to Your Brain

4 min · Jun 12
150 Minutes of Weekly Exercise Cuts Cardiovascular Death Risk in Half -- But Most People Are Doing the Wrong Kind
Field Notes

150 Minutes of Weekly Exercise Cuts Cardiovascular Death Risk in Half -- But Most People Are Doing the Wrong Kind

3 min · Jun 12
The Complete Guide to Gut Health: Microbiome, Probiotics, and the Gut-Brain Axis
Field Notes

The Complete Guide to Gut Health: Microbiome, Probiotics, and the Gut-Brain Axis

4 min · Jun 11
CBT, Somatic Therapy, and IFS: Which Therapy Modality Actually Works for You?
Field Notes

CBT, Somatic Therapy, and IFS: Which Therapy Modality Actually Works for You?

12 min · Jun 11
Anger Isn't the Problem — Suppressing It Is. Here's What the Neuroscience Shows
Field Notes

Anger Isn't the Problem — Suppressing It Is. Here's What the Neuroscience Shows

11 min · Jun 10
Shame Shuts Down the Prefrontal Cortex — That's Why It's So Hard to Think Your Way Out
Field Notes

Shame Shuts Down the Prefrontal Cortex — That's Why It's So Hard to Think Your Way Out

11 min · Jun 10
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