The more efficiently your body can extract oxygen from the air and transfer it to your muscles, the easier your running will feel at any speed. Better Posture means better breathing; better breathing means better running.“As we grew up we started sitting more and moving less. Our rib cages no longer oriented gracefully over our pelvic girdles. The stresses of life began to weigh more heavily on us. As a result, we began breathing differently, less optimally. We started breathing more from our chests, using our upper back and neck muscles. Our diaphragms, while designed for breathing, became inhibited by...