Well Branko, you're inspiration to me, I think I'll try to start doing daily CO2 tables, and see how that works for me. I'm interested to see how it will affect my comfort range and my personal best later on.
I must agree wit Ivo's remark about safety, decompression is a reality when staying down so long, for so many dives.
FRC diving, stands for Functional Residue Capacity, is diving with less than full lungs, namely 'passive exhale' or something a bit over that. Seals are said to do FRC diving when they do deep dives. Do a search on Deeperblue, and read threads like "FRC for beginners" and see the interesting advantages that this way of diving gives, including reducing the chance of decompression illness.
Like Chrismar I'm also interested in what you do differently.
But I'm also interested in your freediving history, the milestones you went through, the changes you made and the results.
BTW it looks like you have a really nice bodyweight to lung size ratio
Ciao,
Kars
ps, when posting I noticed you just had posted! - it must be a bit genetic, though I am looking for things we can train for
the 5'20" is really good, pitty she doesn't fancy the sport yet! (what is her lung/weight ratio? )