What is “Fitness” ?

Another great podcast listen today.  Bulletproof Exec # 26 with book “Body by science” by author Dr. Doug McGuff Here’s the link: Body by Science The following caught my attention: “Anabolic vs. Canabolic state – Fitness is physiological headroom –  output above a rest baseline – stress to create adaptive change – Analabolic bringing in nutrition  – Canabolic introducing stress …