I took our discussion to heart and decided to "branch out" from my treadmill and explore some different options.

It was a beautiful reminder that I have plenty in life left to learn, and that there are lots of unique ways to train our minds and bodies to do new things.
Grateful, this is a great story. It also reminds me of the individual variability of whats challenging. Most (all?) of the things that impress people about me, I take in stride. Some of the things I had to work at and was proud of accomplishing (learning to drive a car, running 3 miles) wouldn't faze most people.