any input on expanding lungs

I have many other breathing patterns I use, but the one above is a good example to train your body to swim with limited oxygen. Donna Donna, unless I am grossly mistaken, when doing your sets you are training your mind to swim with what you perceive as less oxygen, but is more a question of the excess C02. Everyone uses the term "oxygen debt", uses the term "oxygen deprivation" and so forth, when most of the time what is the problem is "excess carbon dioxide". The system that perceives a diminishing oxygen content of your blood is slow and not as efficient as the C02 system. Too much information to give here. When you are oxygen deprived, and/or when your lactate levels start going up, when your muscle conductive systems start failing (at the celular level) you swim less efficiently, you lose muscle power. Oxygen will not make this situation better. The 400 and 200 running records aren't simple multiplications of the 100 times because the whole system breaks down, and yes it is called anaerobic versus aerobic but this is at the mytochondrial level. I am feeling confused myself, got to study more this matter. I hope you get what I am trying to say. People who snorkel get better at going deeper over time because of their mental training, which is a consequence of their actual physical activity (diving deeper and deeper). Of course, after a certain level, there are those superhuman guys and girls who can dive to extreme depths (see the movie "The Big Blue") and that is not only mental training but they also have the physical aspect going for them. take care, billy fanstone

I have many other breathing patterns I use, but the one above is a good example to train your body to swim with limited oxygen. Donna Donna, unless I am grossly mistaken, when doing your sets you are training your mind to swim with what you perceive as less oxygen, but is more a question of the excess C02. Everyone uses the term "oxygen debt", uses the term "oxygen deprivation" and so forth, when most of the time what is the problem is "excess carbon dioxide". The system that perceives a diminishing oxygen content of your blood is slow and not as efficient as the C02 system. Too much information to give here. When you are oxygen deprived, and/or when your lactate levels start going up, when your muscle conductive systems start failing (at the celular level) you swim less efficiently, you lose muscle power. Oxygen will not make this situation better. The 400 and 200 running records aren't simple multiplications of the 100 times because the whole system breaks down, and yes it is called anaerobic versus aerobic but this is at the mytochondrial level. I am feeling confused myself, got to study more this matter. I hope you get what I am trying to say. People who snorkel get better at going deeper over time because of their mental training, which is a consequence of their actual physical activity (diving deeper and deeper). Of course, after a certain level, there are those superhuman guys and girls who can dive to extreme depths (see the movie "The Big Blue") and that is not only mental training but they also have the physical aspect going for them. take care, billy fanstone