> general health > enjoyment of the experience These are subjective measurements. You decide, maybe subconsciously, whether you are feeling healthy or have en

> general health > enjoyment of the experience These are subjective measurements. You decide, maybe subconsciously, whether you are feeling healthy or have enjoyed your experience. Speed and distance are objective. An 8 minute mile is faster than a 9 minute mile. 30 miles is farther than 20 (lets keep elevation constant). When it comes to sports, some of us are driven by those objective measurements. Sometime to beat the "other guy", sometimes just to beat ourselves. I don't know that I can fully explain that drive to someone that lacks it. Have you ever felt driven to perform your best by some objective measurement in a non-sporting aspect of your life? School, work, video games?