What is a recommended way to avoid problems with dead air space while diving?

Breathe slowly with deep, normal breaths is the recommended approach for avoiding problems with dead air space while diving due to its effectiveness in ensuring proper gas exchange and eliminating carbon dioxide buildup. Dead air space refers to areas within the scuba system where the air does not fully circulate, which can lead to stale air being re-inhaled and potentially result in inadequate oxygen intake or increased levels of carbon dioxide.

By taking deep, normal breaths, divers are able to fill their lungs completely and ensure that fresh gas is exchanged efficiently with minimal stagnant air remaining in the system. This practice also allows for better regulation of buoyancy and helps in maintaining a calm and relaxed diving experience, which is essential under the water. Shallow, rapid breaths can exacerbate the problem of dead air space by reducing the volume of fresh air inhaled and might lead to quick exhaustion and anxiety.

Abstaining from breathing entirely during ascent can be dangerous, as it can lead to lung expansion injuries and other complications due to sudden pressure changes. Similarly, limiting breathing to just the nose can restrict airflow and might not effectively clear stale air from the lungs, making it a less optimal choice for deep and efficient breathing while diving.