After doing two more marathons throughout graduate school, I began to question how I was measuring my fitness. I would run for hours on end thinking I was the fittest person ever and liking the fact that it kept me slim. I started reading about the benefits of cross training and decided it would be a challenge to do a triathlon and it would mean incorporating two other disciplines as cross training. So I bought a bike and started swimming in a pool to train for my first spring triathlon in Lake …