On all fours with the grass pressing into my hands and knees, I was already backing out of my goal. I had recently enlisted the help of a friend to improve my muscle strength and endurance. On this particular night, we were at a local park doing conditioning exercises and cardio. While my legs were completing the lifting exercises to strengthen my muscles, my mind desperately looked for a way out of having to run the last lap of our workout. I was convinced I had nothing left.