Updated: 13 Jul, 2018
A common question I’m asked by divers is how to improve their air consumption. While the simple answer is “breathe less”, or jokingly, “breathe in once before you descend, then breathe out slowly for an hour, and breathe in again when you finish the dive”, both are flippant.
There are many options / tools and methods available to help you dive longer. First, it helps to understand why you need to breathe, and how much you breathe.