This overview shows finger temperature change. The vertical axis shows the change in degrees Fahrenheit. Do you think a person’s age or sex mattered? Or might the time of year when a visitor had their hand cooled affect the result? The graph shows the results from 150 Museum visitors who had their hand cooled.
During the cool down
When you are in cold temperatures, your body loses heat energy to the environment. If the blood vessels in your hands and feet constrict (narrow) warm blood stays close to your body’s core, saving this heat and keeping you alive. Your fingers get cold when there is less warm blood flowing through them.
How well would we survive?
Our bodies are willing to sacrifice our hands and feet to save our vital organs and keep us alive, but this happens at a different rate for everyone. Researchers are interested in what factors, such as age, may affect these differences. Our reaction time varies. How fast does your body protect your core?