Have you ever run a marathon? How about an ultra? The thought of running a 100K sounded like 62.1 miles of absolute torture when my sister told me about her first ultra run. Three years later, here I am, starting a new life as a personal trainer, and finishing just 4 minutes behind her at the Everglades 100! How did I do it? Just a few little changes in lifestyle, and a lot of practice — did you know that running, cycling and other endurance exercises release endorphins, the same happy chemicals produced from eating chocolate and smoking cigarettes? Read on for more tips how to get into racing form in no time!