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Health

The Post-Marathon Crash Nobody Warns You About

You cross the line. You get the medal. You eat something greasy. You sleep for ten hours. And by Wednesday, you feel like the floor dropped out.

RED-S: The Female Runner Health Crisis Nobody Puts a Name On

You have probably heard a friend say she stopped getting her period a few months into marathon training. She probably called it normal for runners. It is not normal, and it has a name.

The Number on Your Running Watch That Tells You to Stop Training. Most Runners Are Ignoring It

Heart Rate Variability (HRV) is the earliest warning sign of overtraining. Here is what the number on your watch is actually telling you, and how to act on it before it wrecks a training block.

Harvard Just Found the Best Longevity Predictor Is Not How Much You Exercise. It Is How Many Different Ways You Move.

A 2026 Harvard T.H. Chan School of Public Health study in BMJ Medicine found exercise variety was linked to lower premature mortality, even at the same total activity volume.

She Just Renewed Her License at 108. Her Fitness Secret Isn’t Complicated

108-year-old Susan Young Browne still drives, exercises daily, and lives alone. Nothing in her routine is extreme. That is exactly why masters runners should be paying attention.

Elite Runners Have Fundamentally Different Gut Bacteria, New Study Finds. Here Is What That Means for the Rest of Us.

A 2025 study of 60 professional runners found endurance athletes carry a fundamentally different gut microbiome from sprinters. Here is what the research means for recreational runners.

Female Runners Get Injured at Nearly Twice the Rate of Men. The Fix Is Not More Rest. It Is Testing Two Numbers.

Female runners are injured at roughly twice the rate of male runners. The two numbers that predict most of that gap are ferritin and cycle-phase estrogen, not training volume.

Do You Need Sunscreen for Running Outside? A Runner’s Guide

Runners get higher cumulative UV exposure than the general population. Here is when sunscreen matters, what SPF actually works when you sweat, and what to do about it.

The Training Change Every Woman Runner Over 45 Is Getting Wrong

A 2025 clinical study of women in perimenopause and postmenopause found a training change that outperformed extra mileage. Most running plans still miss it.

His Doctor Told Him He Was Overweight at 67. He Ran Marathons Into His 90s.

A doctor told Sir Christopher Ball to lose weight before his 70th birthday. He picked up running instead. He is now in his 90s and still going.