Jul 12, 2026Neurodegeneration

Fitness and Alzheimer’s Risk: What the Evidence Shows

Can better cardiorespiratory fitness slow Alzheimer's-related decline? Cohort data link fitness to memory and biomarkers, but trials cannot prove cause.

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Jul 9, 2026Mortality

Fitness and Longevity: A Strong Signal, Not Proof

Does better cardiorespiratory fitness predict a longer life? UK and US cohorts show a consistent mortality link, but causation remains unproven in adults.

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Jun 17, 2026Exercise Physiology

Can One Moderate Bike Ride Change Mitochondrial Fuel Use?

Can a moderate cycling session change mitochondrial fuel use? Human studies show acute muscle shifts, while direct respiration evidence remains limited.

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Mar 29, 2026Maternal Health

Fitness, DASH Diet, and Preeclampsia Risk: What We Know

Can exercise fitness or a DASH diet prevent preeclampsia? Review the evidence on hypertensive disorders of pregnancy, safety, and limits.

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Mar 27, 2026Physical Activity

Can Activity Counseling Cut Mortality in Type 2 Diabetes?

A small 11-year diabetes trial linked activity counseling to lower mortality. Why the result is intriguing—and far from settled.

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Mar 24, 2026Physical Activity

Sprint Intervals: Faster Workouts, Unsettled Heart Evidence

Sprint interval training can raise fitness, but a 2025 umbrella review found no proven edge over steady cardio—and much of the evidence rates low quality.

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Mar 22, 2026Physical Activity

VO2peak and Brain Health: What Exercise Trials in Aging Show

Can improving VO2peak help preserve the aging brain? Trials link fitness gains with frontal gray matter, but cognition evidence remains mixed.

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Mar 19, 2026Mental Health

Exercise, Fitness, and Cognition Under Extreme Stress

A refugee-focused RCT found no direct cognitive benefit from exercise—but fitness gains tracked improvement. What it means for stress, pain, and training.

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Mar 16, 2026Physical Activity

Lifestyle Lowers Heart Risk Across Genetic Profiles, With Limits

Studies across European, Korean, Norwegian, and U.S. cohorts link fitness, diet, and no smoking to lower cardiovascular risk at every genetic tier.

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Mar 16, 2026Physical Activity

Teen Fitness, BMI, and Severe Infection Risk Decades Later

A million-man Swedish cohort links low teen fitness and higher BMI with later sepsis, pneumonia, and endocarditis—without proving that either causes it.

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Mar 16, 2026Fitness Metrics

Can Your Wearable’s VO2max Estimate Track Real Fitness?

Wearable VO2max estimates can reflect real fitness trends, but research-grade accuracy has not transferred cleanly to Apple Watch, Garmin, or Fitbit.

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Mar 16, 2026Physical Activity

Cardiorespiratory Fitness and Mortality: The Dose-Response

Cardiorespiratory fitness and VO2max predict mortality in large cohorts. Learn the per-MET gradient, who benefits most, and where the evidence has limits.

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