Posted by Chris on June 26, 2004 at 00:12:19:
In Reply to: Free Diving posted by Darren on June 26, 2004 at 00:03:24:
I think you would increase the likelyhood of shallow water blackout even more so than hyperventilating before a dive. There are methods for increasing bottom time, but they all involve practice and exercise, there is no quick safe fix.