THE RUNNING VEST PROBLEM NOBODY TALKS ABOUT
You spent $150 on a vest. Every review said it didn't chafe. Here's what those reviews missed — and how to actually f...
// Field Dispatches · 23 Posts
Smooth
AF.
Field notes, protocols, and dispatches from the underground. Built for athletes who run long, ride hard, and refuse to stop because of friction.
23
Field Reports
RX
Friction Prescription
// Featured Field Report
100 mileWorthy. Callie's First 100
FRXN // Smooth AF // 1.4 Worthy. Callie Lance, the Chief LaDiga 100, and the friction that actually matters. Subject: Dr. Callie Lance // Race: Chief LaDiga 100 // Status: ...
// All Field Reports
FRXN
World’s Fair Ultras Recap
East Coast Adventures · Knoxville, Tennessee World's Fair Ultra 2026 Results & Tennessee State Record Report...
FRXN
INTRNL MM 004 THE WORK WILL NOT LIE TO YOU
``` ✕ ✕ ✕ FRXN // INTERNAL MEMO // 004 The Work WillNot Lie To You On pebbles....
The Best Anti-Chafe Balm for Ultramarathons
Most anti-chafe products were designed for marathons. They fail at mile 40. This is the honest breakdown — what works...
Why You Chafe Worse After Hour Four
Why does chafing get so much worse in the back half of a long run? It's not bad luck — it's moisture physics and salt...
FRXN
The Physics of the "Chub Rub": Why Your Willpower Isn't the Problem (And How to Fix It)
Chafing isn't a willpower problem—it's the Second Law of Thermodynamics. Learn why movement creates friction, why com...
FRXN // INTERNAL MEMO 003 // THE TINDER BOX
``` ✕ ✕ ✕ FRXN // INTERNAL MEMO // 003 THE TINDER BOX On waking at 3:45. O...
FRXN // WHY ANTI-CHAFE PRODUCTS FAIL IN THE SOUTHEAST
Every anti-chafe product works in mild conditions. The Southeast in summer is not mild conditions. This is the scienc...
FRXN // THE HONEST GUIDE TO CHAFING
Chafing is one of the most common — and most preventable — issues endurance athletes face. Here's the no-BS breakdown...
FRXN
FRXN // Internal Memo 001
FRXN // INTERNAL MEMO 001 FRXN // INTERNAL MEMO // 001 FRICTION PRESCRI...
FRXN
INTRNL MM 001
FRXN // INTERNAL MEMO // 001 FRICTIONPRESCRIPTION STATUS: NOT FOR RELEASE // DISTRIBUTION: INTERNAL ONLY ...
Flat & Fast: The Deceptive Friction of Rails-to-Trails
Flat courses aren't easier — they're a different kind of hard. Here's why rails-to-trails 100-milers like Chief Ladig...
FRXN
The Best Anti-Chafing Cream for Runners
The best anti-chafing cream for runners creates a durable, sweat-resistant barrier that stays intact through hours of...
The Art of Suffering: How to Build Mental Toughness in Endurance Sport
Mental toughness is a skill, not a trait. Learn how endurance sport builds real resilience through the four stages of...
Rucking: The Fitness Practice That Refuses to Lie to You
Rucking is the no-BS fitness practice built for people who want real results — no app, no algorithm, no excuses. Just...
The Weight of the Work: How to Prevent Chafing and Blisters While Rucking
Rucking under heavy load creates aggressive gear-on-skin friction. Learn exactly how to protect your shoulders, hips,...
In the Wind: A Quiet Return at Umstead 100
19:07:06. One hundred miles. Two years of absence, quiet doubt, and the strange weight of coming back to something un...
Why Do Runners Chafe?
Physics doesn't care about your training plan. Skin against fabric, ten thousand repetitions, heat, salt — and eventu...
The System Wants You Smooth
The system has a plan for you.It wants you comfortable. Sedated. Scrolling. It wants you buying things that make the ...
The Architecture of Resistance: Why Your Running Brand Is Lying to You
The wellness industry sells ease and comfort. Friction Prescription was built for something different—for athletes wh...
Beyond the Lube: The Hydrophobic Blueprint for Wet-Ultra Survival
The trail is a living lesson in entropy. In a 100-miler, you aren't just fighting the clock or the elevation; you are...
The Ultimate 2026 Southeast Trail Racing Guide: Friction Prescription's Official Partners
Friction Prescription's official 2026 race partner guide — featuring 11 race directors, 35+ events across Tennessee, ...