Shallow water blackout does not warn its victim first. Here is the physiology behind it, why it strikes trained divers, and why solo breath hold diving is never safe.
Nitrogen narcosis dulls judgment before a diver notices anything is wrong. Here is why depth impairs decision making, and why self-diagnosis often fails.
Divers call it the bends. Doctors call it decompression sickness. Here is what nitrogen bubbles actually do to tissue, and how hyperbaric treatment reverses it.
CWT, CNF, FIM, STA, DYN: a plain guide to how competitive freediving is actually judged, discipline by discipline, and why the letters matter more than the depth alone.
