breathing through the nose rather than the mouth lowers one’s heart rate and helps brain activity. A yogi announced in class that “the nose is for breathing, the mouth is for eating.” I experimented. I took easy, loping hour runs along Lake Washington. It was flat and damp, and the wind was blowing me sideways. I didn’t worry about speed or form. I focused only on breathing in and out through my nose. It was like when I was
