Krista Stryker founded 12 Minute Athlete, a leading expert on high-intensity interval training (HIIT) and bodyweight fitness. She is also the author of the new book The 12-Minute Athlete. In today's conversation, we don't spend too much time around the working-out aspect of Krista's life. Instead, we talk about how we deal with the uncertainty in your life. It's front and center. And we talk about how we deal with uncertainty. How can we learn to focus on things that we can control?