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Freediving Blog

Tips, techniques, and science for breath-hold training. Written for freedivers and spearfishers who want to go deeper.

A freediver training on dry land
Science

Apnea Walks and Anaerobic Metabolism: Managing Lactic Acidosis on Dry Land

Dynamic breath-holds push muscles into anaerobic overdrive. Here is the science of lactic acidosis — and how structured apnea walks build the buffering capacity to conquer the ascent.

14 min read
An elite freediver descending into dark blue water
Science

Hematological Adaptations in Apnea: The Science of Splenic Contraction

Your spleen is a biological scuba tank. Here is how it floods your bloodstream with oxygen-rich red blood cells during a dive session — and how to train it on dry land.

12 min read
A freediver surrendering into calm, deep blue water
Psychology

The Psychology of Apnea: Overcoming the Panic Response

Your body can hold its breath far longer than your mind will allow. Here is the neuroscience of the false suffocation alarm and how to override it.

14 min read
A freediver gliding underwater in a deep blue pool
Nutrition

Fueling for the Deep: What to Eat (and Avoid) Before a Freediving Session

In freediving, digestion is the enemy of performance. Here is the science-backed guide to pre-dive nutrition that will actually extend your bottom time.

15 min read
A freediver training underwater
Training

Why Tracking Your Contractions is the Key to Longer Breath Holds

90% of divers only track total hold time. The metric that actually matters is your time to first contraction — here's why it changes everything.

10 min read
A freediver gliding underwater
Opinion

Subscription Fatigue: Why We Built a One-Time Purchase Freediving App

Freediving is about simplicity and disconnecting. Paying a monthly subscription for a digital timer felt completely backwards to the spirit of the sport.

5 min read
A diver illuminated underwater
Training

What Are Diaphragm Contractions? (And How to Delay Them Safely)

That involuntary spasm is a diaphragm contraction. Here is the secret: when that first contraction hits, you aren't actually running out of oxygen.

7 min read
A diver diving into deep blue seawater
Science

Why Tracking Your Heart Rate is the Secret to Longer Breath Holds

Your brain is a liar, but your heart rate never lies. If you want to increase your bottom time, start paying attention to your heart.

8 min read
Ice formation on a body of water
Guide

How to Trigger the Mammalian Dive Reflex From Your Living Room

You have the same evolutionary hardware as a dolphin. Here is how to activate your built-in dive reflex using a bowl of ice water.

7 min read
Calm rippling blue sea water surface
Science

Overtraining in Freediving: Why Custom Apnea Tables Matter

Sometimes, the harder you train, the worse your breath-hold gets. Generic tables are a sledgehammer when you need a scalpel.

9 min read