In this episode, Dr. Armstrong visits the participants in the 12-Week Transformation Challenge sponsored by Sandi Griffin Fitness (Colorado Springs, CO). It is always a treat to engage with this group of motivated exercisers.Most everyone knows their "why" for exercising. The "why", however, doesn't always get us to our goals. Knowing our "why nots"--our obstacles and excuses--helps us zero in on the behaviors that are limiting our performance. Want to age well? What is your "why not"?Se...