I’m both writer and die-hard exerciser. However, cardio bores me. Sure, I love running outdoors. I dig the scenery (trees, clouds, animals, etc) breathing in the big-sky and soaking up rays. These satiate my sensual-mind. However, these pleasures do little to keep my thinking-mind from chattering, like a wild monkey, telling me “You’re wasting time.” 
To chill my skeptical monkey-mind, I ‘read’ several dozen non-fiction books per year while running. What can I say? I'm easy to dupe. I’ve...