MAMarcus Ashford@marcus_ash · 14h/xA note on cold exposure: the shiver is not the enemy. The shiver IS the therapy. Brown adipose tissue activation, norepinephrine spike, mitochondrial biogenesis. Most people exit the cold the moment discomfort begins — which is exactly when adaptation starts.#recovery#breathworkLiked by Jack Danger, Marcus, and 12 others1.2K Views