Counting down from five or ten seconds before returning to the surface during breath holds can provide a few extra seconds of breath-holding, but it's important not to be too radical and to move to the surface calmly when the body signals it's time.

“eventually after I've been able to work through one or two impulses to breathe I know it's time to come back to the surface I try and count down from five or ten to give myself a few more seconds breath holding but I'm not trying to get too radical with this once my body tells me it's time to get the surface and move to the surface but I do it calmly it's not in the Panic fashion”