Chapter 1
Ancient roots and global traditions
Chapter 2
The biology of heat
Chapter 3
The biology of cold
Chapter 4
Separating science from hype
Ch 3 · The biology of cold
lara The Biology of Cold
Cold triggers brown fat to burn through its store, Creating pure heat from your cells to your core.
lara The rapid cold shock response activates your sympathetic nervous system to instantly boost focus, heart rate, and regulate inflammation.
lara Cold exposure releases norepinephrine to activate heat-producing proteins inside brown fat cells.
BETA
lara Sort the health claims to discover the real science behind sauna and cold exposure.
Fun Fact
Brown fat activation: Unlike white fat which stores energy, brown fat is packed with mitochondria and burns sugar and fat specifically to generate heat.
Quiz
By roughly how much can blood levels of norepinephrine spike during cold water immersion?
Quiz
Which branch of the nervous system is activated to trigger the 'cold shock' response?
Quiz
Which unique protein in brown fat allows it to release energy as heat rather than storing it as ATP?
Quiz
To what percentage above baseline can dopamine levels rise after cold water immersion?