[Bill McIntyre]

I can't agree with Eric.

I know that we are coming from different perspectives. He is a competitive freediver who's sport requires that he push himself to the limits. I'm an old fart who can't imagine what it must feel like to have a chest spasm. I'm just trying to cruise and shoot a fish now and then, but am totally unwilling to push myself to do so.

I can see only an up side to this thing for me. I really don't think it would cause me to push my limits harder because I am so uncomfortable with even the thought of pushing my limits. I think it could only be positive for me in terms of survival.

If you customarily push the edge, then I guess I can see how it might induce you to push it harder, but that is not where I am.