catherine96821 This is the first time I found someone on this forum that also practice diving/free diving, I do free diving spearfishing regularly here in Florida (I don't do scuba diving)and back when I used to live in Cuba,It is difficult for me to explain but I can reach depths of -72 (and more) feet free-diving/Spear fishing relatively easy controlling my mind/breath but that came with practice and practice the same with bicycles, that's why I love to bike because when I'm not in the water It keeps my lungs, legs and mind well trained.

PD: Nice Web site by the way..