00:20 SECONDS  – 25M

Divers lose buoyancy and freefall at an average rate of 1 meter per second

00:25 SECONDS – 30M

The “Mammalian Reflex” kicks in: the heart rate slows by 50%, blood flow shifts from arms and legs to core organs.

00:45 SECONDS – 50M

The brain slows down and divers enter a meditative state.

01:30 MINUTES -100M

From a surface volume the size of melons. the lungs shrink to size of oranges.

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02:05 MINUTES – 100 M

This is psychologically the most challenging part as divers struggle not to think of how far they have to go.

02:25 MINUTES  – 60M

Divers can start to experience stomach contractions as the urge to breathe become stronger.

02:50 MINUTES – 35 M

Safety divers appear to guide the last section.

03:15 MINUTES – 10 M

Oxygen stores hit their lowest and freedivers are at risk of blacking out-when the brain literally shuts down to conserve 02

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Freediving in Bali.