Blog

A side-by-side comparison of natural and synthetic pre-workout supplements. We break down ingredients, effectiveness, side effects, and cost so you can choose what fits your body, goals, and budget.

We reviewed the evidence on 30+ supplements and sorted them into three tiers: works, promising, and skip. Here is what the research actually says — no hype, no miracle claims.

Caffeine is the most evidence-backed performance supplement in sport — but most runners get the dose, timing, or tolerance management wrong. Here's how to use it properly on race day and in training.

Your guide to the vitamins and minerals that actually affect energy production — B12, iron, magnesium, vitamin D, and CoQ10 — plus who benefits, who does not, and why you should test before you supplement.