Rule of thumb: If you're unsure whether you should run today, the answer is YES.
When temps/humidity veer close to "danger zone" territory, remember: There is no shame in the treadmill. #livetorunanotherday
Miles Asks: What health and fitness "rule" do you break, routinely and unapologetically? I'll start: I often skip breakfast.
If you could give one piece of advice to a new runner, what would it be?