To protect core temperature, what does the body do?

The body regulates its core temperature through a variety of mechanisms, one of which involves reducing peripheral blood flow. When the body becomes too hot, it conservatively directs blood flow towards the core, minimizing heat loss through the skin; this is an essential survival mechanism. This reduction in blood flow to the extremities helps retain heat in the core organs, ensuring they continue to function optimally even in challenging temperature conditions.

In situations of excessive heat, while the body may also increase skin blood flow temporarily to dissipate heat through sweating, the main focus of thermoregulation under stress is often about protecting core temperature by limiting peripheral circulation. Raising body temperature, enhancing perspiration, or increasing skin blood flow are responses to various heat or cold environments, but those don’t primarily serve to protect core temperature effectively under all circumstances.