Dr. Jennifer Cultrera of Florida Cancer Specialists joins us this week to talk about thyroid issues and metabolic efficiency, especially surrounding the training and racing issues John has been having as a cancer survivor. Lots of sciency stuff this week, which always makes Randy happy. We also follow up on some questions about carb loading and deciding what bike is best to use in a race.

This Week's Music:

"Gonna Take Some Time" by LEN

"Steal My Sunshine" by LEN