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CO₂ buildup (skip-breathing risk)

Also: skip breathing, hypercapnia

CO2 buildup happens when your body cannot clear carbon dioxide fast enough through normal breathing. This condition is often called hypercapnia by medical professionals. It affects your brain and lungs directly. You might feel a sudden urge to breathe or experience a headache while at 30 m depth.

Many divers accidentally cause this during heavy currents in Komodo. They use “skip-breathing” to save air because they think it extends their tank life. This is a dangerous mistake. High CO2 levels increase the risk of nitrogen narcosis and oxygen toxicity since your body processes gases differently under pressure.

Always maintain a steady rhythm. If you feel short of breath, ascend slightly or slow your movement immediately. Don’t try to hold your breath to save air.