I opened up the weather app on my phone today and felt a bit shocked to see some 90-plus-degree days in the forecast for the upcoming week. Talk about confirmation that the summer training season has finally arrived. Running through the dog days of summer comes with its fair share of challenges. Some of you may even like battling frigid winters more than getting drenched in sweat while training through the summer. And if you’re someone like me that avoids treadmill runs at all costs, you’re likely going to find ways to successfully fit in your miles outside, even on the most brutally-hot days. I was reading Runner’s World contributor Liv Paxton’s recent story on the benefit of micro, air-conditioned breaks during hot summer runs, and it made me reflect on my own routine for tackling the warmest training months.…