The back of the neck and the wrists are the points where you get a bigger cool down effect if you put them under a cold water stream in summer. I think every ru

The back of the neck and the wrists are the points where you get a bigger cool down effect if you put them under a cold water stream in summer. I think every runner or cyclist know that. A good amount of blood circulates close to the skin there so it's easy to cool. Blood circulation does the rest of the job.