Learn how phosphocreatine, glycolytic, and aerobic pathways overlap during exercise, what changes their relative contribution, and how that informs training.
A gradual 6-week sprint-workout framework with track, gym, and hill variations, warm-up guidance, work-to-rest ratios, and clear stop signals.
  • 3 min read
A practical Zone 2 training guide: use heart rate, the talk test, and individual context to find a sustainable aerobic effort and avoid common mistakes.
  • 2 min read

Most pre workouts marketed to women are the same synthetic formulas in pink packaging. A genuinely clean pre workout should have zero artificial sweeteners, zero fillers, zero dyes — and ingredients backed by actual research. PurePump® has 15 active ingredients, every one of them third-party tested by the Banned Substance Control Group.

  • 6 min read
A candid guide to comparing pre-workout labels for a weight-loss goal. PurePump discloses its serving, caffeine, and ingredient amounts without outcome promises.
  • 3 min read
Review pre-workout labels with a sensitive stomach in mind. Compare the full formula, serving size, caffeine amount, and directions without tolerance claims.
  • 3 min read

C4 Original is the best-selling pre workout in America for good reasons — it's cheap, it tastes great, and it works well enough for most people. PurePump is what you switch to when you start reading the label. This comparison breaks down exactly what's in both products, what you're paying for, and who each one is actually built for.

  • 9 min read

Two pre workouts. Both transparent labels. Both free of artificial colors and proprietary blends. Both made by brands that actually care about ingredient disclosure.

But they take fundamentally different approaches to what a pre workout should be. Here's an honest breakdown.

  • 9 min read

The caffeine molecule in a natural pre workout is chemically identical to the one in a synthetic pre workout. So is the creatine. So is the beta-alanine. The real differences are everything else in the formula — the sweeteners, colors, fillers, flow agents, and mystery ingredients that pad out most products — plus how much you can trust what's actually on the label. A truly natural pre workout uses natural-source ingredients, discloses everything, skips the artificial additives, and proves it with third-party testing. A synthetic one gives you the same core molecules buried under artificial sweeteners, FD&C dyes, proprietary blends, and filler you didn't ask for.

  • 13 min read

Ultra-clean supplements for ingredient conscious athletes of all sports and standings.

Ultra-clean supplements for ingredient conscious athletes of all sports and standings.

We began Doing Vitamins as a reaction. First, a reaction to a huge disconnect in thinking. Advancements in conscious eating and workout performance were simply unmet by vitamin and sport supplement companies. Eat obsessively for optimal athletic performance, yet supplement with untested, chemically-laden trash? Meh, no thanks.

So we set out to source the cleanest, most-studied ingredients and make them into incredible supplements that help you optimize your health and fitness. No artificial or toxic ingredients, our entire lineup is tested and certified by multiple third parties.

We Do Vitamins because we believe in the incredible benefit of good supplements. Good supplements can be the difference in winning a game, or breaking a record, or lifting the weight that makes you feel like your best self. In some cases, quality vitamins can even mean the difference between life and death. We believe in supplements because we know the good ones work. But evil supplements and the historically unethical, dishonest marketing that have accompanied them, are a scourge on health and consumer trust. Discerning, conscious consumers demand purity and performance from their supplements, and we will continue to make them to that level when nobody else will. We Do Vitamins as a total revolution in philosophy, product, and business practice. Our products that do what they say and contain what their labels say – have total confidence in our total transparency.

And that’s not even the best part.

All this hyper-perfectionism, ingredient obsession, and rigorous testing – you know what it’s brought us? The best customers in the industry. Thank you for your business and support of our cause.

We began Doing Vitamins as a reaction. First, a reaction to a huge disconnect in thinking. Advancements in conscious eating and workout performance were simply unmet by vitamin and sport supplement companies. Eat obsessively for optimal athletic performance, yet supplement with untested, chemically-laden trash? Meh, no thanks.

So we set out to source the cleanest, most-studied ingredients and make them into incredible supplements that help you optimize your health and fitness. No artificial or toxic ingredients, our entire lineup is tested and certified by multiple third parties.

We Do Vitamins because we believe in the incredible benefit of good supplements. Good supplements can be the difference in winning a game, or breaking a record, or lifting the weight that makes you feel like your best self. In some cases, quality vitamins can even mean the difference between life and death. We believe in supplements because we know the good ones work. But evil supplements and the historically unethical, dishonest marketing that have accompanied them, are a scourge on health and consumer trust. Discerning, conscious consumers demand purity and performance from their supplements, and we will continue to make them to that level when nobody else will. We Do Vitamins as a total revolution in philosophy, product, and business practice. Our products that do what they say and contain what their labels say – have total confidence in our total transparency.

And that’s not even the best part.

All this hyper-perfectionism, ingredient obsession, and rigorous testing – you know what it’s brought us? The best customers in the industry. Thank you for your business and support of our cause.

Good supplements can be the difference in winning a game, or breaking a record, or lifting the weight that makes you feel like your best self.

Good supplements can be the difference in winning a game, or breaking a record, or lifting the weight that makes you feel like your best self.

Superior Ingredients

Superior Ingredients

We know you care about what goes into your body which is why we use the highest quality, branded ingredients that are patented and clinically tested.

We know you care about what goes into your body which is why we use the highest quality, branded ingredients that are patented and clinically tested.

No Added Nonsense

No Added Nonsense

Our products are concentrated and formulated to provide your body with what it needs without the junk found in almost all other supplements on the market.

NO GMOs, synthetic additives, fillers, flow agents, dyes, colors, artificial ingredients, preservatives, toxins, drugs, or lies.

Our products are concentrated and formulated to provide your body with what it needs without the junk found in almost all other supplements on the market.

NO GMOs, synthetic additives, fillers, flow agents, dyes, colors, artificial ingredients, preservatives, toxins, drugs, or lies.

Tested & Trusted

Tested & Trusted

Every batch is tested by the Banned Substance Control Group (BSCG) for more than 500+ banned substances in sport, prescription, over-the-counter, and illicit drugs, covering drugs on the World Anti-Doping Agency (WADA) Prohibited List.

In addition our line up is vegan, Certified Paleo and Keto.

Every batch is tested by the Banned Substance Control Group (BSCG) for more than 500+ banned substances in sport, prescription, over-the-counter, and illicit drugs, covering drugs on the World Anti-Doping Agency (WADA) Prohibited List.

In addition our line up is vegan, Certified Paleo and Keto.