75 Year Old Zumba Instructor and Fasting Retreat Owner January 9, 2015 Exercise 0 Comment Fasting Retreat Owner Millan Chessman is a 75 year old Great Grandmother who loves Zumba! She also happens to be a resident expert on Fasting, Detoxing, and Cleansing. She owns and runs a CA Fasting Retreat in Julian. Enjoy this Zumba routine.