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How Freediving Trains the Nervous System Through Stress and Recovery
Why Freediving May Be the Most Complete Stress Medicine We've Ever Ignored The Epidemic We've Stopped Questioning Stress has become an epidemic in modern society. But we need to be specific about which kind, because that distinction changes everything. What we're drowning in — the damaging kind — is chronic stress : prolonged, low-level, unresolved pressure that never fully switches off. It hums in the background of daily life. It has been linked to a staggering range of phys
Harry Chamas
Mar 26 min read


Why Equalization Gets Harder as You Go Deeper — And How to Fix It
Do you feel like equalization becomes more difficult the deeper you dive? You might notice it starting as shallow as 5 meters, or it may only show up past 30 meters. Either way, the experience is the same: what felt smooth and easy near the surface suddenly requires more effort. Eventually, it can feel like you’ve hit a wall. This article explains why that happens — and what you can do about it. The End-Range Problem To understand what’s happening, it helps to compare equaliz
Harry Chamas
Feb 253 min read


Anatomy of Frenzel
Scroll down and fill in the form below to book a consultation Welcome to this introduction to the anatomy of Frenzel. If you have made it this far, you already know something important: you can physically equalize. You simply need to learn the skill. That may sound easier said than done. Until now, it is likely that no one has clearly explained this to you. But trust me with clear communication and deliberate practice, you will learn it. Frenzel equalization uses a specific c
Harry Chamas
Feb 173 min read


Think You “Can’t” Equalize? Let’s Prove It
One consistent pattern is this: about 50% of beginners struggle to equalize well enough to truly enjoy freediving or even complete their course.
What makes this worse is that most instructors do not have the depth of knowledge or the time required to teach the intricate subtleties of Frenzel properly.
Harry Chamas
Feb 174 min read
How to become a Freediving Coach
The path to becoming a freediving instructor is clear. Finish the recreational freediving courses, attend an instructor course, then you...
Harry Chamas
Oct 12, 20214 min read
Rest and Recovery | Freedivings most under rated training principle
Rest and recovery must be the most under rated aspects of training in freediving. Utilising Proper rest could be the piece of the puzzle...
Harry Chamas
Aug 9, 20204 min read
From Fear to Flow
The interesting thing about this video is the contrast in reactions between the professional and the brave new comer. What can this tell...
Harry Chamas
Jun 18, 20204 min read
Breath Control does NOT = Hyperventilation
Hello all, this blog is written in anger. I have just read another post claiming that any breath manipulation is hyperventilation. The...
Harry Chamas
May 1, 20204 min read
A comparison of STA and depth diving with regards to CO2 build up/Urge to breathe
A comparison of STA and depth diving with regards to CO2 build up/urge to breathe Deep diving is my passion. The vast majority of my...
Harry Chamas
Mar 16, 20204 min read
A Beginner Course For People Serious About Learning To Freedive.
A little while ago, I gave up teaching courses and focused on individual coaching. The reason was not because I don't enjoy teaching...
Harry Chamas
Mar 4, 20205 min read
Competition in Freediving | Good Bad or Ugly?
Following is my own personal opinion on the essence of freediving competition, how it effects the rest of the community and the athletes...
Harry Chamas
Oct 14, 20194 min read
Self Awareness | Freediving as a Tool for Self Improvement
It has almost become a cliche to say freediving is (insert the percentage) mental. But that doesn't make it less true. A beginner may not...
Harry Chamas
Aug 12, 20193 min read
Courage | Freediving as a Tool for Self Improvement
Freediving can be a sport in which an athlete descends below the surface of the water and back again on a single breath. Progress is...
Harry Chamas
Jul 21, 20195 min read
KAATSU for Freediving | The Future of Freedive Training
I was lead to KAATSU by a simple problem, I was no longer able to sustainably train lactate in the pool due to my technique and strength...
Harry Chamas
Mar 2, 20199 min read
Longer and Deeper: Cross training for freediving and spearfishing - by Jaap Verbaas
Jaap and I made contact just over a week ago, after some conversation and a little internet stalking I began to see that he was quite an...
Harry Chamas
Feb 8, 20193 min read
Review of "The Oxygen Advantage" from a Freedivers Perspective
The book puts forward a method to increase health, well-being and performance through manipulation of the breath and therefore the blood...
Harry Chamas
Feb 3, 20193 min read
O2 (Hypoxic) Training | Purpose, Mechanism and Benefits
O2 training has long been a staple of freediving training, so much so that it is taught during the 2nd level of most freediving education...
Harry Chamas
Jan 26, 20196 min read
Why I don't warm up for my deep dives
We all got taught in our first freediving courses that warm ups are good. They will help us to put our mind into the right place, allow...
Harry Chamas
May 17, 20174 min read
The Comfort Zone in Freediving
Your comfort zone could be described as the depth you are 100% certain you can do. There will be no nerves before the dive, you could do...
Harry Chamas
Apr 15, 20173 min read
Do you have a Duck-Dive or a Dying Duck
Hello and welcome to our newest freediving blog, although this one is 1/2 blog, 1/2 rant. As I am sure you have deduced from the title,...
Harry Chamas
Feb 22, 20174 min read
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