Here are a few of my favorite. I'm not sure if they are on audio book.
Eat to Beat Disease: The New Science of How Your Body Can Heal Itself The New Science of How Your Body Can Heal Itself by Dr. William Li
Good to Go: What the Athlete in All of Us Can Learn from the Strange Science of Recovery by Christie Aschwandn
The Brave Athlete: Calm the F*ck Down and Rise to the Occasion by Lesley Patterson. One of my favorite books of all time! I refuse to loan out my copy and have reread it 2-3 times.
The Terrible and Wonderful Reasons Why I Run Long Distances by Matthew Inman