Because I'm doing a tri. Also because it's a very time efficient means to exercise. I'm not to the point where it's fun yet though I have "wow" moments where it is more energizing than not. That's still rare though

This morning I ran 2.5 miles before work. I could not get my heart rate down but I'm recovering from a cold and I rode a total of 100 miles in the previous three days. I was sore and coughing so it wasn't one of the more memorable runs