I’m no marathoner, but I do try to run 3 miles at least a couple of times a week. For me, running is a no-brainer cardio activity. Equipment? Nope. Driving to the gym? Nope. Squeeze it in pretty easily on any given day? Yep! But living in Phoenix, where I do, can present some major challenges for outdoor jogging. In the summer, morning slogs — er, jogs — are really affected by the heat and humidity. We’re legit talking about 90 degrees in the early a.m. — temperatures that have inspired the words “This city should not exist. It’s a monument to man’s arrogance,” from Bobby Hill of “King of the Hill.” And this summer I’d been feeling rather defeated by the heat and humidity. My times had slowed, and I consistently took the last mile at a panting, dripping walk. Should I just take a break? I wondered. Come back when opening my front door doesn’t feel like unleashing the fires of hell? While I knew I needed to be safe about preventing heat exhaustion, I realized ...