Science
How Heat Training Changes Endurance, According to Researchers
Heat training expands plasma volume and can lift endurance performance in weeks — modestly, per small trials — but it takes real heat and real caution.
Science
Exercise research summarized honestly: muscle physiology, fatigue, sleep, heat and altitude adaptation, with sample sizes and effect sizes given.
Science
What the Research Actually Says About Creatine
Decades of trials point to real strength and power gains from creatine monohydrate — but the effect size depends on who's taking it, and the kidney fears haven't held up.
Science
Fat Adaptation and Low-Carb Endurance: What the Science Shows
Low-carb training genuinely rewires fat burning — and in controlled trials with elite endurance walkers, it either matched or slightly worsened race performance.
Science
Supercompensation: How Training Adaptation Actually Works
The supercompensation model explains why timed recovery produces gains — and modern physiologists treat it as a useful simplification, not a law.
Science
Cycle-Based Training: An Honest Review of the Evidence
Training around the menstrual cycle sounds like precision sport science — the studies behind it are too small and too inconsistent to prescribe from yet.
Science
Caffeine and Performance: What Dosing Research Shows
Roughly 3 to 6 milligrams per kilogram of body weight improves endurance and power in most adults — with sleep disruption, not habituation, as the main cost.