Today's Fitness Pulse

Eternal launches AI‑driven health podcasts
Eternal, a health‑and‑longevity startup, closed a $13.25M seed round and introduced AI‑generated weekly podcasts that pull data from wearables, blood work and DEXA scans. The five‑minute audio briefings deliver personalized updates on sleep, movement, strength, cardio and recovery.
The Freedom of Constraints
The Growth Equation highlights Dave Epstein’s new book *Inside the Box*, which argues that constraints—not unlimited freedom—drive creativity and breakthrough performance. Real‑world anecdotes include a high‑school runner who won a state title using short, low‑intensity intervals after mononucleosis, and a pandemic‑era athlete who built unprecedented strength with only a few kettlebells. The book distills three core ideas: shifting bottlenecks to unlock greatness, embracing satisficing over relentless optimization, and recognizing that self‑interruptions persist even without digital cues. These principles aim to reshape coaching, work habits, and business strategy.
Skipping Recovery Slashes Fat Burning, Forces Carb Dependence
How much does the nervous and aerobic systems change when not recovered? Rested, and ready I’ve tested at >10 kcal/min fat max. HR 120 Not ready, while I’m still trying to recover that fat max reached 4.4 kcal/min today. HR max was...
Breathwork + Sauna: Free Biohack Boosts Brain and Body
The ultimate biohack is free: Your breath. 🫁 I’ve been stacking SOMA breathwork with dry sauna sessions and the physiological shifts are insane. Here is why this combo is a powerhouse for your brain and body:
Mapping Molecular Markers of Physical Fitness
MIT, GE HealthCare, and the U.S. Military Academy at West Point created a computational model called PhenoMol that links over 100 blood‑based molecular markers to physical‑fitness performance. The study measured more than 50,000 biomarkers in 86 cadets training for a...

What Is Hyrox, and Why Is Everyone Suddenly Doing It?
Hyrox, a hybrid fitness racing format launched in Germany in 2018, is rapidly expanding across U.S. gyms and hosting major races in multiple cities. The competition pairs eight 1‑km runs with functional strength stations such as ski‑erg, sled push/pull, burpee...
Study Finds 80% Energy Compensation Threshold Triggers Metabolic Shifts in Elite Athletes
Researchers from three South Korean universities reported that elite athletes experience a U‑shaped energy compensation curve during a 48‑week high‑intensity training cycle, with compensation falling to roughly 80% at peak load. The resulting daily deficits of 624‑840 kcal are linked to...

Bulk‑and‑cut Offers No Edge over Recomping
You don’t have to bulk and cut. The current evidence has yet to show an advantage for it compared to recomping. Been saying this for over a decade now.
Gym Advice Often Ignores Your Training Goals
seeing a few posts about advice ppl get in the gym reminds me of the time some guy said I was doing dips wrong because I was using my chest too much. Nevermind the fact that I was trying to...

How to Increase Your Overhead Press, According to a 4-Plate Presser
GQ senior editor Ian Burke interviews strongman‑coach Sam Shethar, who boasts a 405‑lb overhead press, to reveal a practical roadmap for adding weight to the standing strict press. Shethar recommends a three‑day undulating split—heavy (1‑3 reps), light (8‑10 reps), and...
Why Weightlifters Should Be Leopard Crawling (If They Actually Want to Move Well)
Leopard crawling, a low‑tech animal‑flow drill, is gaining attention among strength athletes for its ability to counteract the tightness that heavy lifting creates. The movement forces wrist extension, horizontally decompresses the spine, and compels big‑toe extension, restoring natural foot‑to‑hip mechanics....

5 Key Takeaways From Spring 2026 Military Wellness Symposium
The fourth Military Wellness Symposium convened at Stars & Stripes in Washington, D.C., gathering senior military editors, researchers, and sports officials to discuss fitness as a national security priority. Key sessions highlighted sleep’s impact on performance, the unregulated supplement market...

200-Milers Vs. 100-Milers
Annie Hughes, a 27‑year‑old ultrarunner, captured the Moab 240 title in her debut 200‑mile race, highlighting the distinct challenges of multi‑day ultras. She explains that the first night often forces runners into sleep deprivation, while the second night sees a surge...

A VO2 Max Test Can Reveal Your Untapped Potential. But When You Take It Is the Secret to Training Smarter.
A VO₂ max test provides a precise snapshot of an athlete’s cardiorespiratory capacity, informing personalized heart‑rate zones and training intensity. Experts recommend conducting the test at the very start of a training block to set a baseline, then retesting about...
Boost Exercise Intensity with Rotation, Tempo, and Holds
Simple ways to make an exercise harder without adding more weight: •add a rotation •slow down the tempo •add an isometric hold at the bottom

11 Kettlebell Exercises to Level-Up Your Workouts, Approved by Experts
Fitness experts from Equinox, Motion Training and independent coaches outline eleven kettlebell moves that can replace or supplement traditional dumbbell routines. The list ranges from mobility‑heavy Turkish get‑ups to power‑focused swings, thrusters and farmer’s walks, each paired with rep schemes...

Combat Athletes: Master Olympic Lifts for Power
Comment WEIGHTLIFTING for the adapted weightlifting program for combat sport athlete. Get stronger, more powerful and learn how to olympic lift all in one program. Comment below and share
Study Finds ‘Super Shoes’ Boost Speed but May Heighten Injury Risk for Elite Runners
Researchers at Mass General Brigham studied 23 elite distance runners and found that advanced footwear technology—so‑called “super shoes”—significantly improves race‑pace speed while decreasing cadence and increasing overstriding, factors linked to higher bone‑stress injury risk.

The Overlooked Cycling Problem That Drains Power and Causes Pain—And How to Fix It
Cyclists often overlook posture fatigue, where weakened upper‑back and core stabilizers force the shoulders upward, shallow breathing, and an inefficient pedal stroke. As these muscles tire, the trapezius overcompensates, creating neck strain and reduced leg power. The problem is compounded...

Do Women Really Pace Marathons Better than Men?
A new study reexamines the widely‑cited 2015 analysis that claimed women pace marathons better than men. Using the same 91,929‑runner dataset, Tenan and Borg identify statistical quirks and argue that the original 12 % time‑adjustment inflates gender differences. Their revised analysis...

These Glute Exercises for Knee Pain Keep You Running Strong
Nearly half of U.S. runners report injury each year, and knee problems account for 27% of those cases. Experts say weak glutes shift load to the quads, heightening knee stress. A five‑exercise glute circuit—standing kickback, hip abduction, donkey kick, lateral...
Top 5 Strength Moves Every Runner Needs
5 exercises runners should be adding into their strength routine: 1. Single leg RDL 2. Bulgarian Split Squats 3. Single leg hip thrust 4. Back Squat 5. Box Step Down
Performance Beats Single Metrics: Embrace Holistic Fitness
My Vo2max when I ran a 4:01 mile was 67 My Vo2max when I ran 4:05 a few years later: 76 Performance is what matters. Looking at one number in isolation or chasing it is not the answer. This is why an obsession...
Muscle Hormones Reveal How Exercise Boosts Whole‑Body Health
Scientists explain that contracting muscles secrete myokines—hormone‑like proteins—that travel through the bloodstream to regulate immunity, metabolism, cognition and cardiovascular health. A 2024 review highlights interleukin‑6 spikes up to 100‑fold during intense activity, underscoring exercise’s systemic impact.

Training Framework: Variables, Not Prescribed Workouts
The Modules... Not specific workouts... but the variables you need to consider as you build your plan. Basically, the science behind the planning. A thread... Again... This is not a training program. It is a framework for understanding how...
BONUS: Stronger Culture - The Protein Ceiling: Real or Not a Needle Mover? (Ft Eric Helms & Steve Hall)
In this bonus episode, Eric Helms and Steve Hall discuss the role of caffeine—particularly diet sodas like Pepsi Max—in bodybuilding routines, debating optimal timing, dosage, and its impact on performance and sleep. They critique popular “science communicator” advice that discourages...
Marathon Training Builds Capacity for Tougher Workouts
A large portion of marathon training isn’t directly preparing you for the marathon. It’s preparing you for future longer/harder workouts, which will prepare you for the marathon. You’re training to handle harder training so you can handle the race.
Taipei Times Guides Fitness Fans to Eccentric Training for Strength Gains
The Taipei Times published a guide this week emphasizing eccentric training as a proven way to boost strength, power and flexibility. Citing recent research and expert commentary, the piece urges coaches and recreational lifters to incorporate slower, controlled lowering phases...
Detachable Pull‑Up Bar Powers Fast, High‑ROI Workouts
The detachable pull up bar delivers the best ROI for a homeless person like me (btw, soon I will finally get a small apartment and post about it - I found a great place to live). I know I am...

Top Sprint Coaches Reveal Secrets to Success (Part I)
Top sprint‑swimming coaches across club, collegiate and professional levels are re‑examining traditional high‑volume training. Australian Olympian Cam McEvoy’s success with just two to four weekly sessions and heavy gym work has sparked interest in low‑volume, high‑intensity protocols like Tabata. Coaches...
Getting Into Spinning Or Cycling? Research Says These Supplements Are Best
A recent systematic review led by Australian Olympian Sophie Edwards identified the top supplements that enhance cycling performance and accelerate recovery. The researchers highlighted beta‑alanine, caffeine, carbohydrates, creatine, electrolytes and several others for on‑bike fuel and fatigue resistance. For post‑ride...
The Longevity Secrets Helping Athletes Blow Past the Limits of Age
Athletes are redefining age limits by embracing advanced recovery tools such as red‑light therapy, compression sleeves, and personalized nutrition. High‑profile examples include 38‑year‑old WNBA star Alysha Clark, 44‑year‑old NFL quarterback Aaron Rodgers, and 43‑year‑old pitcher Justin Verlander, who recently signed...

Triathlon Track Session: 800/400 Sets Guided by Feel
Great Bend Triathlon track workout tonight with 800 and 400 pacing sets based on perceived exertion. #bendtriclub #fuelthefinish
Bulldog: Working on Regaining Man Card
The author outlines a lower‑body focused training session that combines warm‑up drills, progressive squat sets, and a suite of assistance exercises. The routine emphasizes the Yukon bar’s need for a tight back grip, a 65 % Safety‑Squat Bar, and high‑tempo Good‑mornings...
ACSM Rewrites Strength‑Training Guidelines, Emphasizing Consistency Over Complexity
The American College of Sports Medicine (ACSM) has overhauled its strength‑training position stand—the first revision in 17 years—highlighting regular, simple routines over elaborate programs. The new guidance, built on 136 systematic reviews covering more than 30,000 people, recommends training all...

CJC‑1295 Extends Sauna Heat‑Shock Time, Delays Threshold
Bodybuilders use the peptide CJC-1295 to grow muscle. I tried it for two weeks. Unexpectedly, it changed how my body responded to 200°F sauna protocol. First, the good. I spent more total time above the heat shock protein (HSPs) threshold. This...
Peak Performance Requires Rest, Recovery, and Sleep
Performance-level training with a foundation of rest, recovery, and sleep. “Turn it up to 11”
Jack Kelly On Training for 50, 100, 200 Breast: “It’s Still Something I’m Trying to Figure Out”
Jack Kelly, a rising breaststroke specialist training with Bob Bowman at the University of Texas, captured the 50‑ and 100‑meter titles at the Fort Lauderdale Open, posting 27.42 and 1:00.72 respectively, and placed second in the 200‑meter behind Olympic champion...
30 Years of Coaching Reveal High‑Performance Essentials
The 123 of High Performance: What 30 years as a coach and exercise physiologist has taught me... 👇🧵
Whoop Data Reflects and Drives the Observed Shift
Consistent with whoop data however whoop is as much a cause of this shift as it is an objective measure

Struggling with Zone 2 Running? You May Have Set Your Heart Rate Zones Incorrectly
Recent research reveals that conventional heart‑rate formulas often misplace Zone 2 by up to 10 bpm, because individual variation can be as high as 5 percent. A 2025 laboratory study of 50 endurance athletes showed lactate and ventilatory thresholds are far more precise...

Caffeine Boosts Carb Absorption, Enhances Endurance Performance
Carbohydrates and caffeine are often consumed to improve endurance performance. Can caffeine increase the absorption of carbohydrates during exercise? If so, what does this mean for performance? Read the blog for more: https://t.co/tI4zx8NQXp https://t.co/gqJ47oCKaM
Choosing the Right Weight Boosts Training Effectiveness
The question of what weight to use in a resistance training program comes up commonly not only among beginners, but also experienced lifters. Here are some thoughts on making good weight selections: https://t.co/sc72FmZc57
Gatorade Launches Multi‑Year "Body of Science" Program to Study Women’s Hydration
Gatorade announced a multi‑year, global research program called "Body of Science" to investigate women's hydration and nutrition across the menstrual cycle, pregnancy and perimenopause. Led by the Gatorade Sports Science Institute, the effort already includes 500 participants and high‑profile athletes...
Even Top Performers Crumble Gradually, Not All at Once
High performers rarely fall apart all at once. Perseverance erodes under fatigue. Self-belief gets fragile under stress. Presence disappears when recovery is poor. The body keeps the score before the mind explains it.
Design Smarter Workouts: Free Guide for Optimal Gains
I put together a free guide: How to Design Better Workouts. Filled with insights on writing creative workouts that get the right stimulus for the desired adaptation. Grab a copy for free: https://thegrowtheq.ck.page/c51b8637db

This Return-to-Running Plan Looks Almost Too Easy. That’s What Makes It So Effective.
The Omega Project’s 9‑step return‑to‑running plan uses a progressive run‑walk format to help athletes rebuild mileage after four‑plus weeks off. Physical therapists Brianne Scott and Jacob Travis stress starting with short intervals, conversational pace, and regular strength work to avoid...
Hip Mobility Scores Predict Lifespan, Assess With Simple Moves
Hip mobility is essential for healthy and pain-free movement. And it might even predict how long you'll live. What does that look like? According to Dr. Kelly Starrett (@thereadystate), you should be able to squat with your hip crease below your knee,...

Turn Strength Into Real‑World Power and Speed
Comment “performance” or click the link in bio to access the #1 program for athletes looking to transfer their strength into real sport performance: power and RFD. All the weightlifting exercises you need—easy to learn and modified so anyone can reap...

A Cycling Coach Says You’re Probably Not Eating Enough. Here’s the Fueling Strategy That Works.
Cycling coach Marissa Axell warns that many riders over 40 underfuel, compromising performance and health. She cites a 50‑plus athlete who won her age group at the 2025 TransRockies Gravel Royale by prioritizing a structured fueling plan. The article outlines...

Pre‑Workout Carbs, Post‑Workout 3:1 Carb‑Protein Ratio
Fueling before and after workout is critical for muscle repair, adequate recovery, and overall proper nutrition. When prepping your pre workout focus on simple carbs with a little protein. After workout, if having a snack right after aim for a...