Research library

Explainers held to a clinical-publishing standard.

Every guide shows its named author, medical reviewer, review dates, and an evidence-strength grade — with numbered primary-source citations placed directly after the claims they support.

RecoveryEvidence: Strong

Sleep Architecture and Recovery: What Actually Moves the Needle

Slow-wave sleep, REM proportion, and the interventions with real trial support — separated from wearable-vendor marketing.

Medically reviewed · 2025-06-18 · by Maya Okafor

NutritionEvidence: Moderate

Metabolic Flexibility: The Evidence Behind Nutrient Timing

What human crossover trials say about meal timing, glucose response, and training adaptations — and where the effect sizes get exaggerated.

Medically reviewed · 2025-06-10 · by Maya Okafor

LongevityEvidence: Observational

Heat Exposure and Longevity: Reading the Sauna Literature

The Finnish cohort data is compelling but observational. We walk through what it can and cannot support, dose-response included.

Medically reviewed · 2025-06-05 · by Daniel Reyes