Denis wrote in message ...
Gary Boggs wrote:

And about the M&H system, I use the cannula but you have to be very careful
that you don't take any breaths through you mouth. I've heard of some guys
holding a mouthful of water to make sure they don't.

This is not allowed above 0°C level (water could freeze)

If the water in your mouth freezes you have worse problems than
hypoxia!
If your body temperature drops to freezing level, hypothermia will
have long since killed you.

If you do this at least try to freeze yourself in a stable best L/D
glide into the wind so you can glide into the hereafter a real long
ways, at least you will not have to worry about a PIO.

chris