How we create fitness guidance.

Authorship

Articles identify the person responsible for the work. STHENO does not use invented authors, reviewers, credentials, or affiliations. Current guides are written by Matthew David, STHENO’s founder and a Certified Personal Trainer.

Evidence and sources

For claims about training, nutrition, recovery, and supplements, we prioritize peer-reviewed research, systematic reviews, consensus statements, professional organizations, and government health sources. Each linked source must support the claim for which it is presented.

Scope and safety

STHENO provides education and fitness coaching support, not diagnosis or emergency care. General guidance cannot account for every medical condition, medication, symptom, pregnancy, injury, or eating-disorder history.

Dates, updates, and corrections

Publication dates describe when an article first appeared. Updated dates change only after a meaningful editorial revision. We correct material errors and update guidance when stronger evidence changes the practical conclusion.

Recommendations

Training and nutrition estimates are starting points, not guarantees. We explain the context, tradeoffs, and signals that should guide the next decision.