Eric Fattah first described his infamous “Frenzel-Fattah mouthfill equalisation technique“ in 2000. Since then it has allowed many who master it to dive deeper.
Exhale diving (FRC) is a great way to practice mouthfill equalisation. It is also a good way to increase thoracic and diaphramatic flexibility in preparation for deep dives. Exhale diving can be dangerous and should only be attempted after formal training.
We will discuss the theory and techniques involved, try some dry exercises then head out to the ocean to try it out.