Emma Bryce's video is a great, concise visualisation of the basic understanding of how lungs work. Taking a look at the roles of Carbon Dioxide (CO2) and Oxygen (O2) in our breathing, it prepares us well for a beginners' freediving course and may well fill in some details even for advanced freedivers.

This has been bugging me for a long time.

Decompression related injuries (DCS) have become a significant factor in advanced freediving and one way of reducing the risk of DCS is to work with well-defined surface intervals.

How to calculate this surface interval is the logical question. We do not have the tables established in the experimentation done for scuba divers and very little hard data to go by. So rules of thumb were created to at least have some idea.

Scubapro Meridian dive computer

What is the Scubapro Meridian like for freediving? An unfinished product or a raw diamond?

The Scubapro Meridian is an advanced watch-size dive computer that offers a Scuba-, Gauge- as well as an Apnea mode which targets a group of users who want to scuba dive as well as freedive, both potentially to an advanced level, as features like gas changes and a depth rating to 120 metres suggest.

Step-by-Step Guide to Optimal Equalizing for Freedivers and Scuba Divers

Eric Fattah first wrote the “Frenzel Fattah Equalizing Document” to explain the Frenzel technique and his strategies for equalizing well below residual lung volume (80m+). Since it was made available on the internet, at least ten thousand people have benefited from his guide to Frenzel and mouth-fill equalizing.

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