Originally Posted by registered usar
i think my weakness right now are my lungs. i don't have asthma or anything but lungs don't match my heart or leg muscle capacity. i do not smoke....i think i got shortchanged with lung genes or something 
is there some kinda of device or machine i can buy that can hopefully build up my lung capacity. hmmm. just now the thought of researching what those swimmers who hold their breath and try to dive as deep as they can do seems like a good place to start. i need some sleep now though. surpise me with responses when i wake up 
They use Yoga and meditation. I love free diving and one of my goals is to be able to hold my breath for 8+ minutes.