Lou Schuler’s Knee Injury Changed How He Trains
After both quadriceps tendons ruptured, Lou Schuler reconsidered joint pain, exercise selection, barbell loyalty, and smarter strength training.
Chris Pruitt
Chris Pruitt is a certified ASFA personal trainer and the founder of WorkoutHealthy, a fitness equipment retailer serving customers since 2007. He has more than 16 years in the fitness business, and he writes and fact checks everything published on Insider.
Sydney Hunter’s Simple Strength Advice Actually Works
Sydney Hunter’s powerlifting success comes back to repeatable basics: progressive training, enough protein, planned recovery, and consistency.
Dave Bautista’s Kratos Rebuild: What Two Months Can Change
Dave Bautista says he is three weeks into weight training for Kratos with two months to go. Here is what experience and muscle memory can really change.
How Dwayne Johnson Lost 50 Pounds Without a Crash Cut
Dwayne Johnson says he lost 50 pounds over a full year for Lizard Music. Here is what his slow cut can teach about pace, performance, and recovery.
Hip Mobility Drill: A Five-Level 90/90 Shin Box Guide
Try a supported 90/90 shin box, then progress to controlled hip switches. This guide corrects the front and rear hip rotation cues and explains what the research can actually show.
Overcoming Isometrics: Strength, Tendons, and the Evidence
Overcoming isometrics can train force at a fixed angle. See what tendon studies actually tested, why six-second claims overreach, and how to check a fixed-object setup.
Can a One Minute Wall Sit Really Work Like Cardio?
A wall sit does more than tire your legs. Here is what a 270-trial analysis found about isometric holds and blood pressure, and how to do one safely.
Training a Muscle Every Day: What the 30-Day Experiment Shows
A viral fitness experiment found that training a muscle daily made it grow up to four times faster on MRI scans. Here is what the experiment actually tested, and what it does not prove.
One Mile Every 4:48, Thirteen Times Straight: The Half Marathon World Record
Letesenbet Gidey ran 1:02:52 for the half marathon in Valencia in 2021, a world record that still stands nearly five years later. Here is what running economy, altitude training, and pacing science say about how she did it, and the real difference between a mixed-race world record and a women-only best.
114 Pounds, Two Rings, One Rep: The Science of the World’s Heaviest Ring Muscle-Up
Roudy Kallas added 51.86 kilograms to a ring muscle-up, a Guinness World Record. Here is the real biomechanics and strength science behind how that is even possible, and how to train toward weighted calisthenics safely.