Physical Activity

Apr 6, 2026

When Does Exercise Matter Most for Dementia Risk?

Framingham data link physical activity in midlife and later life to lower dementia risk. What the finding means—and what it cannot prove.

dementia prevention exercise timing alzheimer's

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Apr 6, 2026

Sex Before Exercise: First RCT Finds No Performance Loss

Does masturbation before exercise hurt performance? The first crossover RCT in trained men found no impairment 30 minutes later—and a 3.2% gain in cycling time.

rct masturbation athletic performance

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Apr 6, 2026

Eccentric Exercise Recovery: When Foam Rollers Actually Help

Eccentric exercise damage fades with specific training. Learn when preconditioning, cold water, foam rolling, and PEMF may help recovery.

muscle damage doms eccentric contractions

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Apr 1, 2026

Can Brain Light Therapy Improve Endurance? The First Trial Says No

Prefrontal oxygenation may shape endurance, but the only randomized trial of transcranial light therapy in trained cyclists found no benefit.

central fatigue prefrontal cortex endurance performance

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Mar 30, 2026

Exercise, HRV, and Why Training Structure Matters More Than Volume

Can exercise improve HRV? Evidence shows training helps on average, but periodization, intensity, and modality can shape cardiac vagal adaptation and recovery.

heart rate variability periodization resting rmssd

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Mar 30, 2026

HIIT Can Delay HRV Recovery. Does Training Time Matter?

HIIT delays HRV recovery more than moderate exercise. A small trial suggests training time may affect heart-rate recovery—but not yet in healthy HIIT users.

hiit hrv parasympathetic recovery

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Mar 29, 2026

Compression Socks Show No Running Performance Gain in Review

Do compression socks make runners faster? A 2025 meta-analysis finds no measured performance gain; one trial hints at a narrow gut benefit during running.

compression socks running performance meta-analysis

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Mar 29, 2026

Is 6,880 Steps a Real Target for Diabetes Prevention?

A 6,880-step target is linked to lower diabetes prevalence, but poor predictive accuracy means it is not a proven prevention cutoff.

step count type 2 diabetes reverse causation

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Mar 28, 2026

Muscle Memory After a Break: What Human Studies Show

Muscle memory survives short training breaks, but human myonuclei can decline with long inactivity. What HIIT epigenetics and aging research show.

muscle memory myonuclei resistance training

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Mar 28, 2026

Exercise May Methylate Inflammatory Genes in Immune Cells

Exercise changed immune-cell DNA methylation in older women and women with PCOS, but the evidence does not yet prove targeted gene silencing.

dna methylation exercise epigenetics

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Mar 28, 2026

Walking Improved Heart Strain in a Small Type 2 Diabetes Trial

A 12-week walking trial improved cardiac strain, fitness, and resting heart rate in type 2 diabetes without HbA1c mediation. What it means.

walking type 2 diabetes cardiac function

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Mar 28, 2026

Diet, Exercise, and DNA Methylation After Major Weight Loss

Can diet and exercise alter DNA methylation? One 12-month study in severely obese hypogonadal men found leukocyte shifts, but not proof of fat-cell change.

dna methylation dnmt exercise

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