Win Wenger, discoverer of image streaming, also writes about held breath underwater swimming as an intelligence increase strategy.

Has anyone tried this? At all? And:

if you've tried it, did you do laps at the pool with your breath held, or did you just sit there underwater holding your breath for the time required?

I have tried to hold my breath as I swim, and find I cannot even get close to Win's couple of minutes. Me: 20 seconds max.

Also, I find the held breath underwater swimming exhausting and difficult to do. Has anyone got tips on making it easier, because it is clearly an excellent strategy for increasing intelligence.

For those who have no idea what I'm on about, the link to this stuff is:
http://www.winwenger.com/ebooks/guaran.htm

Happy reading!

Pveitch