All articles by category: Freediving

Freediver descends on line

RV and Exhale diving.

The residual volume of the average human is approximately 1/4 of the total lung capacity (TLC). As a freediver starts to descend on a single breath, the residual volume will be reached at 30 metres. Fully exhaling on the surface and freediving on this lung volume is known as exhale diving or RV diving, which

Freediver swimming under the blue hole arch

Boyle’s law and Archimedes principle simplified.

Sometimes, when advancing in free-diving the physics can be a little daunting – especially for those who find physics a little challenging. Below is a simple explantation on what happens with a few diagrams to illustrate. If you do have any question please contact me in the form on the homepage. This article is going to

A freediver with his arms above his head. performing the duck dive

Mammalian Dive Reflex

IntroductionHumans have a reflex in common with dolphins, whales and other diving mammals called the Mammalian Dive Reflex (MDR); one of the triggers being facial immersion and breath holding. The Mammalian dive Reflex helps us extend our breath-hold time and shift blood into appropriate places to safe guard them from the increasing pressure with depth. Bradycardia