The coldest part of the body that is usually measured is the armpit, with a temperature of 35.9°C. However, the extremities, such as the hands, fingers, feet, ears, and nose, are also known to be colder than the rest of the body, especially when exposed to cold temperatures.
The extremities tend to be colder because they are farther away from the heart, meaning they receive less blood flow, which carries heat throughout the body. This reduced blood flow makes them more susceptible to losing heat to the environment.
Additionally, while the rectum is the warmest part of the body, the scrotum in males is said to be the coolest part, with a temperature around 2-3°C lower than the body temperature. This lower temperature helps facilitate sperm production.
