Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: The human body has an average, normal temperature of about 98.6ºF. To keep the core body temperature from becoming too high, the brain sends a signal to the body to
increase blood flow to the skin.
Sweat.