About
Biohacker, data nerd, skeptic. By Maximilian Naumow.
Biohack Performance was born out of a simple frustration: there are thousands of biohacking blogs but almost none that work with real data. Instead: anecdotes, influencer deals, and claims without substance.
I've worn an HRV tracker daily for over two years (Whoop 4.0 → 5.0, plus Oura Ring 4, Ultrahuman Ring Pro and RingConn Gen 2 in parallel testing). Since early 2026, I've added continuous glucose monitoring (FreeStyle Libre 3, Dexcom Stelo). All raw data goes into a local database — and I analyze what it actually says, not what marketing promises.
Methodology — how I test
Every article on this site follows the same structure:
- Transparent test duration: No "3-day quick reviews". Wearables are worn in daily life for at least 4-8 weeks; CGMs for at least one full sensor cycle (14-15 days). Test period is stated in every article header.
- Parallel comparisons when possible: Smart rings, for example, were all worn simultaneously (different fingers, same nights) — that's the only way to get reliable delta values.
- All devices self-purchased: No PR samples, no sponsored reviews, no "device provided for review" deals. If a manufacturer ever offers me a free unit, I'll disclose it in the article — it hasn't happened yet.
- Quantified findings: "Better" or "worse" isn't enough. When I say "Oura's REM detection is better", the same paragraph contains a concrete number (e.g. "23 min more REM sleep than Ultrahuman on the same night").
- Honest downsides: No product is without weaknesses. Every review has an explicit "what annoys me about this product" section.
Data pipeline
All raw data (Whoop, Oura, Ultrahuman, RingConn, Apple Health, CGM apps) flows via automated exports into a local SQLite database. Analysis runs in Python (Pandas, Statsmodels) on a Linux server. This lets me investigate multi-month trends and correlations that an app UI can't surface.
What I don't do
- No hype cycling: "5 biohacks that will change your life" isn't a thing here. If a method shows no measurable effect after 30 days, I write that (see Sleepmaxxing analysis or Methylene Blue self-test).
- No medical recommendations: I'm not a doctor, dietitian, or sports scientist. Everything here is self-experimentation and personal opinion.
- No faked before/after images: When I show data curves, they're exported from my own database.
Transparency — affiliate links and money
Some articles contain affiliate links (Amazon Partner Program, similar programs). These are marked with an asterisk (*). If you buy through such a link, I get a small commission — your price stays the same.
Important: I only recommend products I use or have thoroughly tested myself. Affiliate commissions don't influence buying recommendations — my 2026 smart ring ranking would look identical if I earned nothing from it.
No paid reviews, no sponsored content, no native advertising disguised as tests.
Contact & feedback
I read every piece of feedback — especially the critical kind. If a number in an article looks off or you have a test idea, reach out.
- Contact via Impressum (site legal contact)
- Also available in German: 🇩🇪 Deutsche Version
This page also functions as an E-E-A-T signal (Experience, Expertise, Authoritativeness, Trustworthiness) for Google and LLMs. If that means nothing to you: no worries. If it does: you now know why it's this detailed.