What is a recommended practice to avoid shallow water blackout?

To avoid shallow water blackout, practicing controlled breathing techniques is essential. Controlled breathing helps regulate carbon dioxide levels in your body and ensures adequate oxygen supply. By using specific techniques, divers can optimize their breathing patterns before and during dives, which significantly reduces the risk of hypercapnia (excess carbon dioxide) and hypoxia (insufficient oxygen).

Hyperventilation, often associated with attempting to hold one’s breath for longer durations, can lead to a dangerous drop in carbon dioxide levels in the bloodstream. While it may seem beneficial in the short term, it actually increases the likelihood of shallow water blackout since the body's instinct to breathe is triggered primarily by high levels of carbon dioxide rather than low levels of oxygen.

Avoiding any breathing control is not advisable, as it can lead to erratic breathing patterns and poor oxygenation. Additionally, increasing the length of breath holds without proper training in controlled techniques poses serious risks, as it can also result in loss of consciousness underwater.

In summary, utilizing controlled breathing techniques is a proactive and smart way to maintain optimal oxygen levels and safety while diving, effectively preventing shallow water blackout incidents.