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Originally Posted by trux
It is much more efficient doing a CO2 exercise without hyperventilation, deep breathing, and/or purges, than doing a longer table with it. Unfortunately, I often see that people mostly prefer doing longer tables with a lot of breathing, just to be in the "upper class" of freedivers who do the longest tables.
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I prefer shorter intervals in tables, both for O2 and CO2 tables. However, I do deep breathing in the intervals, and I usually do relatively long tables. This is not to be competitive and do the longest tables, it is because I prefer to build up CO2 or low O2 slowly over the course of the table, and this way I can build up my tolerance much better. For me, building up CO2 suddenly with short intervals is unbearable, and if I try to do it I usually give up before finishing the table. If I do a table with intervals of 1:00 or 0:45, and deep breaths in this time, I can feel that by the end of it I have very high CO2, but it has become bearable because there is no sudden increase. For the same reason, I don't like starting off with long intervals, because then my CO2 level starts off very low and then increases suddenly, which is too much. A breath-up of 2:00 is usually too much for me in any table.
Lucia
