Deliberate cold exposure has positive biological effects on brain function and metabolism.

“Cold-water immersion produces beneficial brain & metabolic effects that converge on norepinephrine, a neuroendocrine hormone boosted from cold that increases mitochondrial biogenesis.”

“but habitual cold exposure can have far-reaching beneficial effects on our bodies Metabolic health and possibly brain function many of which converge on a chemical released in response to the cold norepinephrine”

“but it can also act as a neurotransmitter and may influence brain function animal studies have found that chronic cold exposure also promotes the release of norepinephrine from the locus ceruleus region of the brain in the brain norepinephrine is involved in vigilance focus attention and mood”

“because of norepinephrine's unique effects cold exposure may influence aspects of physiology relevant for fighting metabolic related diseases and parameters of brain function associated with mood neurodegeneration and depression”