In this episode of Huberman Lab Essentials, Dr. Susanna Søberg discusses the benefits of cold and heat exposure on metabolic health. The conversation covers how deliberate cold exposure can improve insulin sensitivity, activate brown fat, and enhance physiological resilience.
Key points
Dr. Søberg explains that cold exposure activates the sympathetic nervous system and catecholamines, which are crucial for metabolic health. 1:03
Different types of cold exposure, such as cold showers and full immersion, have varying effects on cold receptors in the skin. 2:33
Cold exposure activates brown fat, which increases metabolism and helps regulate body temperature. 3:22
Shivering during cold exposure releases succinate, which further activates brown fat. 7:40
Regular cold exposure can improve insulin sensitivity and reduce inflammation. 12:09
Cold exposure can be as simple as sleeping in a cooler room to activate brown fat. 15:03
Alternating between cold and heat exposure, such as using a sauna, can enhance metabolic benefits. 21:00
The 'Søberg Principle' suggests ending with cold exposure to maximize metabolic benefits. 33:06
Quotes
If you enjoy the cold exposure, something is wrong. It should be uncomfortable.
Ending with cold exposure is like a workout that continues for hours after you finish.