[xiphiasgladiuse]

micheal
EDIT: Forgot, many people say smoking increase CO2 tolerance, which is usually a + unless you can hold your breath till you BO.

One of my friend smokes everyday,everynight and drinks cheap wine(1bottle is 3 dolars)
he dives around 30 meters to catch big octobus(because big ones always being in deep in winter)he catch a 9 kg octobus by hand in 27 and stayed 3:10 and sell them to cary on his life.we dived together if i were a camera i could make a copy for you i saw him at the bottom like he was in a war with the octobus.it covered him and he was trying to turn head to make it's power block.belive me 9 kg octobus head turn in the water like to bend an iron he is 30 years old and he diving for 20 years and also spearing huge fishes.he says i love deep i fell very well there and i love smoke. i say many times stop smoking stop drinking he do what he believes.i drink but not smoke but i am not as good as him.meanwhile smoking is harmfull i hate it.
why he does not black out if smoke makes BO?