You might know that I go on runs a few times a week. Well, my latest run was, by all accounts, bad. But I got some great insight out of it that I wanted to share with you. My Hard "Easy" Run In many training plans, you'll have an "easy run" scheduled in once a week. That means you should: Be able to say a sentence or two without gasping for air, and/or Be in your heart rate Zone 2 (out of 6) Usually, I can scrape by at the top of Zone 2 at a pretty slow jog, typically 13.5/14 minutes per...