Every device on this page I’ve personally bought and used for at least 60 days. The longevity device space — PEMF, cold plunge, red light — has as much noise as the supplement space. My job is to cut through it.
Devices are a different kind of test than supplements. The placebo effect is stronger, the feedback is subtler, and the price points are higher — which means bad buying decisions hurt more. I track results week by week and I’m specific about what changed and what didn’t.
PEMF therapy
- Resona Vibe Review: 60 Days with a Pocket PEMF Device — what PEMF actually did (and didn’t do) after two months of daily testing.
- What Is PEMF Therapy? A Skeptic’s Guide — what the research actually shows, how it works, and what 60 days of daily use felt like.
- Does PEMF Therapy Actually Work? — the research honestly reviewed, and 60 days of personal results.
- PEMF Therapy for Sleep: 30-Day Protocol and What Actually Happened — I tracked sleep onset, wake-ups, and morning alertness week by week.
- Resona Vibe vs HigherDOSE PEMF Mat — the $1,012 price difference explained, and who should buy which.
- Best Portable PEMF Device for Home Use (2026) — honest ranking from someone who’s used the top pick for 60 days.
Cold plunge
Cold plunge reviews are in progress. I’ve been using The Plunge All-In for 90 days as a daily longevity protocol — the comparison article and protocol guide are coming shortly.
How to read these reviews
Same standard as supplements: I only write about devices I personally own, I track results week by week with specific timelines, and I tell you what didn’t work as clearly as I tell you what did. Devices are expensive enough that you deserve the honest version before you spend the money.