Chapter
The Importance of Blood Glucose Levels During Exercise
1:03:53 - 1:06:57 (03:03)
During exercise, the body breaks down glycogen to maintain blood glucose levels and prevent a drop in blood pH, glucose, pressure, and electrolyte concentrations. The liver also plays a crucial role in stabilizing blood glucose levels.
Clips
During exercise, energy is first produced locally by muscle through phosphocreatine and carbohydrate stores.
1:03:53 - 1:05:02 (01:09)
Summary
During exercise, energy is first produced locally by muscle through phosphocreatine and carbohydrate stores. Your body prioritizes regulating blood glucose levels because glucose is a primary fuel source for the brain and will break down liver glycogen to maintain glucose concentrations in the blood if necessary, resulting in an increase in blood glucose concentrations during exercise instead of a decrease.
ChapterThe Importance of Blood Glucose Levels During Exercise
EpisodeGUEST SERIES | Dr. Andy Galpin: How to Build Physical Endurance & Lose Fat
PodcastHuberman Lab
The "bonk" or hitting the wall is the result of running out of glucose.
1:05:02 - 1:05:52 (00:49)
Summary
The "bonk" or hitting the wall is the result of running out of glucose. The liver starts to become a real problem after two hours of long duration endurance exercise or when glycogen levels lower than 75% causing fatigue signals.
ChapterThe Importance of Blood Glucose Levels During Exercise
EpisodeGUEST SERIES | Dr. Andy Galpin: How to Build Physical Endurance & Lose Fat
PodcastHuberman Lab
Depletion of the liver leads to exhaustion and the inability to continue physical activity due to lack of backup reserves.
1:05:52 - 1:06:57 (01:05)
Summary
Depletion of the liver leads to exhaustion and the inability to continue physical activity due to lack of backup reserves. The liver being completely depleted sends a neural signal to the brain to stop pushing the body.