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I sometimes find myself dreaming about freediving and actually holding my breath. Once I was dreaming about doing statics, and I woke up to find myself still holding my breath. It was not uncomfortable at all, so it probably hadn't been a very long time, but it's hard to tell. Maybe my PB is longer than I think!jome said:On a side note, according my girlfriend I actually packed in my sleep last night. That's kind of freaky I was dreaming I was in a competition getting ready for a start...Sheesh. Gives whole new meaning to sleep apnea though
I find that quite interesting seeing as the Dr.s who spoke at the Worlds were saying that Co2 levels were the main limiting factor to static times. They also noted that their studies showed experienced freedivers were doing longer breath holds primarily due to better purging technique, lowering their Co2 levels before a static and therefore allowing more of it to accumulate before getting close to maximum levels during the hold.
Purging is just one form of ventilating CO2. Most people use it as a last focused ventilation at the end of more gentle ventilations. The validity of sudden aggressive ventilations is questionable. Since the same ventilation of CO2 can be achieved using rapid light ventilations, or longer gentle ventilations. However, there may be more complex issues at work, such as those explored by Eric Fattah regarding tissue vs blood acidity, etc... I suspect that is where the real differences lie. Back in 2002 the reason I initially tried a static with no warm-up and rapid hyperventilation, was because it occurred to me that the long slow breath-ups were essentially the same thing, just taking longer. All breath-ups are a form of hyperventilating. Play with the variables (time, exertion, relaxation, breath frequency, etc...) and you can probably find that all breath-ups have an equivalent to each other with some combination, in terms of blood acidity (CO2 build-up).Jason Billows said:When you do your sub-neutral breathing do you do any purging before you begin your static? It sounds to me as if you don't. I find that quite interesting seeing as the Dr.s who spoke at the Worlds were saying that Co2 levels were the main limiting factor to static times. They also noted that their studies showed experienced freedivers were doing longer breath holds primarily due to better purging technique, lowering their Co2 levels before a static and therefore allowing more of it to accumulate before getting close to maximum levels during the hold.