What exactly am I purchasing?

H.A.R.P. Athletics carries three product types: premium supplements, performance apparel, and digital guides. Supplements and apparel ship physically. Digital guides — like the 5P Starter Guide — are PDF files delivered instantly to your email after purchase. No waiting, no login required.

How do I access my guide after purchase?

Immediately after checkout, a confirmation email with your download link will arrive in your inbox. Check your spam folder if you don’t see it within a few minutes. Your guide is yours to keep — download it, save it, return to it whenever you need it.

Is the science in these guides actually credible?

Yes. Every guide is built on peer-reviewed research and evidence-based physiology — not trends, not bro-science. References include published studies from institutions like University College London and the Journal of Clinical Endocrinology & Metabolism, alongside ISSA-certified standards. We cite our sources because the work stands on its own.

What if the guide isn’t right for me?

We stand behind the quality of our work. If you have a concern about your purchase, reach out via our contact page. This is a one-person operation — you’ll hear from Darien directly.

Do I need special software to open the guides?

No. The guides are standard PDF files, readable on any device — phone, tablet, or computer — using any free PDF reader (Adobe Acrobat, Apple Books, or your browser’s built-in viewer).

Can I share the guide with others?

Each purchase is licensed for personal use. Real work went into these guides, and sharing them freely undermines the ability to keep creating. If someone in your life would benefit, send them to the store — the entry price is low by design.

Why are the guides priced the way they are?

These guides are priced to be accessible — not to maximize margin. The goal is to get the right information into the hands of people who will actually use it.

I have a question that isn’t answered here.

Reach out via our contact page. No support ticket system. No chatbot. A real response from the founder.