Thanks, Helen, I may do that.

I have been paying attention to my breathing since yesterday. I've done pretty well at breathing through my nose most of the day, until I went for a power walk with the Dog. My power walks aren't that fast, but they are steady and I am working my way up to them lasting longer and longer. While I was walking, about halfway to my turn-around point, I noticed I was mouth-breathing a lot. Closed it up as soon as I noticed, but I still needed air and the wind was very cold (wind chill of probably about zero) so I covered my mouth with my gloved hand to warm the air and walked on to the car.

I will look into a less expensive DVD, too.

Thanks, again.