Endurance athletes are always looking for an edge. That extends to professional cyclists, who are among the fittest humans on earth who require a high amount of fuel to pedal through grueling mountain stages and time trials during multi-week races like the Tour de France. In the past years, a lot of hype has been going around exogenous ketones. On this episode, Mark Evans (PhD) who has been one of the researchers contributing to the available research so far shares his insights on the subject.