Fitness & Composition

Editor’s Pick Fitness & Composition

Why Muscle Is the Organ of Longevity

Muscle is a metabolic powerhouse whose decline tracks closely with frailty and mortality.

By The Colognes Desk· June 22, 2026· 3 min read

Fitness & Composition

The Science of Strength Training After 40

Resistance training becomes more important after 40, not less — defending against muscle and bone loss.

2 min read

Fitness & Composition

Zone 2 and VO2 Max: The Cardio Metrics That Predict How Long You'll Live

Aerobic capacity (VO2 max) and moderate-intensity training (Zone 2) are massive longevity predictors.

2 min read