Filters
Is Weighted Neck Training Safe? A Beginner’s Guide to Choosing and Using a Neck Harness
What the research actually says about neck training safety, why the loading method matters more than the brand, and how...
Read More
Best Iron Neck Alternatives (2026): Every Option, Honestly Compared
If you have priced an Iron Neck and paused, you are asking a reasonable question. It is a good device...
Read More
Peer-Reviewed Research on Neck Training Harnesses: The Royal Danish Air Force Study That Names Neck Flex®
Summary: A peer-reviewed randomized controlled trial published in Frontiers in Public Health in 2020 names the Neck Flex® head harness...
Read More
The Neck Flex Documented Use Archive: 2012-2026
Further reading The single most rigorous entry in this record — the Royal Danish Air Force trial whose three peer-reviewed...
Read More
Neck Flex in F1: The Movie - The Neck Harness Formula 1 Drivers Train With
Pre-stunt neck work during F1 production at Silverstone — Neck Flex® harness under band resistance. Photo courtesy of Barry Sigrist....
Read More
How to Get a Bigger, Thicker Neck - Fast (The Complete Training Guide)
We've been designing and engineering neck training equipment in the United States since 2010, and we've spent over a decade...
Read More
Neck Flex Independent Reviews & Documented Use: The Public Record
Everything on this page is the public record: independent reviewers, clinicians, journalists, athletes' own public footage, and customers speaking in...
Read More
Gonza LLC v. Mission Competition (Iron Neck): The 2021 Preliminary Injunction, in Plain Language
This page presents public court records from Gonza LLC v. Mission Competition Fitness Equipment LLC, W.D. Tex. Case No. 6:21-cv-00771....
Read More
Neck Flex vs. Iron Neck (2026): The Complete Comparison
Published by Neck Flex® / Gonza LLC — yes, we make one of the two products compared below. That's exactly...
Read More