Insights
Evidence-based articles, practical coaching advice and sports science insights from verified professionals.
Acute:Chronic Workload Ratio: A Practical Guide for Coaches
ACWR became one of the most widely adopted load-monitoring tools in sport on the promise that spikes in training load predict injury. The underlying research is more contested than the popular "sweet spot" charts suggest — here's how to use it without over-trusting it.
Latest Articles
Return-to-Play After Injury: Why Time Alone Isn't a Good Enough Criterion
"Six weeks in a boot" tells you almost nothing about whether tissue can actually handle sport again. International consensus guidelines now recommend criteria-based return-to-play decisions instead — here's what that looks like in practice.
Sleep Is Your Most Underused Recovery Tool
Foam rollers, ice baths, and compression gear all get more attention than sleep, despite sleep having a larger and better-supported effect on recovery and performance. Here's what the research on sleep and athletic performance actually shows.
How Much Protein Do You Really Need? What the Evidence Shows
Protein needs for resistance-trained individuals are well studied, and the evidence points to a clear, unglamorous range — well short of the amounts often marketed by supplement brands. Here's what a landmark meta-analysis actually found.
Running Economy: Why Your Easy Runs Matter More Than Your Hard Ones
Running economy — how much energy you spend at a given pace — improves mainly through consistent aerobic volume, not through the interval sessions most runners fixate on. Here's the physiology behind why easy running is the unglamorous foundation of every good running program.
How Much Training Volume Do You Actually Need for Hypertrophy?
More sets generally means more muscle growth, up to a point of diminishing returns that depends heavily on recovery capacity. Here's what the volume research actually shows, and how to find your own ceiling instead of chasing someone else's.
Progressive Overload: The Only Training Principle That Actually Matters
Progressive overload reliably predicts long-term strength and muscle gains better than any single exercise choice or "optimal" rep range. Here's what it actually means in practice, and four ways to apply it when adding weight to the bar stops working.
Browse by Topic
View allStrength
Building maximal strength through progressive resistance training.
Hypertrophy
Evidence-based muscle growth: volume, frequency, and exercise selection.
Running
Training methods, technique, and physiology for runners.
Endurance
Aerobic conditioning, periodization, and race preparation.
Nutrition
Fueling training and recovery with an evidence-based approach.
Recovery
Sleep, rest, and the recovery methods actually worth your time.
Programming
Designing training programs that actually produce results.
Coaching
Practical guidance for coaches working with real athletes.
Sports Science
Research and physiology behind athletic performance.
Injury Prevention
Reducing injury risk and returning to sport safely.
Featured Contributors
View allPopular Articles
Acute:Chronic Workload Ratio: A Practical Guide for Coaches
ACWR became one of the most widely adopted load-monitoring tools in sport on the promise that spikes in training load predict injury. The underlying research is more contested than the popular "sweet spot" charts suggest — here's how to use it without over-trusting it.
Return-to-Play After Injury: Why Time Alone Isn't a Good Enough Criterion
"Six weeks in a boot" tells you almost nothing about whether tissue can actually handle sport again. International consensus guidelines now recommend criteria-based return-to-play decisions instead — here's what that looks like in practice.
Sleep Is Your Most Underused Recovery Tool
Foam rollers, ice baths, and compression gear all get more attention than sleep, despite sleep having a larger and better-supported effect on recovery and performance. Here's what the research on sleep and athletic performance actually shows.
How Much Protein Do You Really Need? What the Evidence Shows
Protein needs for resistance-trained individuals are well studied, and the evidence points to a clear, unglamorous range — well short of the amounts often marketed by supplement brands. Here's what a landmark meta-analysis actually found.
Are you a coach, sports scientist, or clinician? Apply to contribute.