Wahine, interesting description about nose breathing increasing use the lower lobes of the lung and the diaphragm and the blood being able to pick up more oxygen per breath. Nose breathing felt like it helped my posture and gave me a more "relaxed" feeling with my efforts. Not a big thing, but the little things do add up, especially over distance.

Tattiefritter, you're not kidding about not inhaling bugs. I like to run on a path that follows the river and there are sometimes lots of gnats. They go straight for the teeth and the eyes - ick!

Deb