I was an avid free diver before I joined the Army (to be a diver no less) and during a medical examination they did x-rays of my chest. The doctor came back surprised and told me my lungs were 25% larger than normal. Even now I take one breath for every two my wife takes. I always thought it was kind of cool.

For me free diving is a spiritual thing. Nowhere else am I more calm, more sure of myself, I can be a visitor to an entirely different world.