Most runners operate way too tough. We log the vast majority of our miles at average- and superior-depth speeds, hardly deigning to strike the reduced-depth paces which are so necessary to making an aerobic foundation. Then, the heart enters into a short period of repolarization, and that is a period https://abdulq061bzv0.blogmazing.com/29081250/5-easy-facts-about-polarized-heart-described