I'm a 5'7" ex-soccer player of 10 years with long, lean legs; basically, I'm naturally an awesome long distance runner, right? HA! The truth is that I'm athletic, but I've always lacked the endurance that a soccer player needed to truly succeed. It didn't help being scrawny for most of my life and having an extremely weak mind due to insecurities. Here I am now, 26 years old, lifting weights and/or running at least 5 out of 7 days a week. What changed?