Just some tips about cooling quickly, efficiently and safely.

Heating and cooling of the body is known as Thermoregulation.

There are three areas of our body that can remove heat (or bring heat into the body) faster than anywhere else.

Glabrous skin is found in the bottoms of feet, palms and face

Arterio-venous anastomoses (AVAs) are direct connections between small arteries and small veins and are super cooling and found in glabrous skin.

So if you overheated some protocols to quickly reduce your core temperature would be

splash cold tap/faucet water onto your face

hold a can of drink from the fridge in your hands

take your shoes and socks off and stand on cold tiles or in cold water

The point is AVAS should not be constricted by too cold a temperature. So putting your hands in an ice bucket would be far less effective than cold water. Sitting in an ice bath would be far less effective than cold water.

Similarly you can raise your core temperature quickly by warming glabrous skin.

Best wishes,

Atty