I run/bike to have some quiet time. Some time to listen to myself breath and to allow my mind to imagine and sort through things.
Exercise is a way to get my mind off the rest of the world, and sometimes my mind helps me stop focusing on the exercise I'm doing.....and how much I'm hurting!!! LIKE WHEN GOING UPHILL AND THE WIND IS BLOWING IN MY FACE...HARD.
Yes sometimes my mind keeps me going is so many ways.