Having metabolic flexibility means you can depart from ideal food choices now and then, and then get right back into the groove.
The Author of this Quote
![Mark Sisson](/_next/image?url=https%3A%2F%2Fassets.heroic.us%2Fauthors%2Fheadshots%2Fmark-sisson.jpg&w=640&q=75)
Author
Mark Sisson
American fitness author and blogger, and a former distance runner, triathlete and Ironman competitor