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.
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
Freediving in Bali.