Body heat, not external heat. Humans are warm-blooded and stabilize heat based on external conditions. This is why athletes take ice baths after performance to promote faster healing because they need to be able to do this again in a few days.
Try cold showers for a week and see the enhancement. I would direct you to Wim Hof as well, but that might not be interesting at this stage.
Cold showers are better for your cardiovascular health. So yay?
I thought heat is what stimulates circulation.
Body heat, not external heat. Humans are warm-blooded and stabilize heat based on external conditions. This is why athletes take ice baths after performance to promote faster healing because they need to be able to do this again in a few days.
Try cold showers for a week and see the enhancement. I would direct you to Wim Hof as well, but that might not be interesting at this stage.