Planning Guides
Planning Guides from The Blue Stillness, shaped by its Adventure Travel focus.
Planning Guides from The Blue Stillness, shaped by its Adventure Travel focus.
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The Contraction Is Data: Stop Running From Your CO₂ Alarm
That involuntary squeeze at depth is not failure — it is your CO₂ chemoreceptors doing their job. Here is how to read the signal instead of fleeing it.
Koa VanceMarch 4, 2026Shallow Water Blackout: The Science Behind the Last 10 Meters
At 5 meters, your O2 partial pressure can drop below the consciousness threshold. Here's the physiology behind shallow water blackout—and the buddy protocol.
Koa VanceMarch 1, 2026The Physics of the Final Five: Why Your Last Meters Are the Deadliest
The deadliest meters of any freedive aren't at the bottom. They're the last five on your way up. Here's the partial pressure physics that kills experienced divers—and why your surface protocol matters more than your depth.
Koa VanceFebruary 22, 2026Why Wim Hof Will Get You Killed at Depth: The Hyperventilation Myth That Won't Die
The Wim Hof Method has gone mainstream, but hyperventilation before a freedive is a blackout waiting to happen. Here's the physiological correction that could save your life.
Koa VanceFebruary 22, 2026