Evan does not understand how his body is capable of functioning without his awareness at times. He does not have to tell himself to cool down when he is hot; his body does it naturally. Explain to Evan the different functions involved in maintaining his body temperature.

Evan, your body is an amazing machine that is constantly working to maintain a stable internal environment, including your body temperature. This process is known as thermoregulation and involves several different functions working together.

One of the key players in thermoregulation is your hypothalamus, a part of your brain that acts as a thermostat for your body. When your body temperature rises, the hypothalamus sends signals to your blood vessels to dilate, allowing more blood to flow near the surface of your skin, which helps to release heat. It also signals your sweat glands to produce sweat, which cools your body as it evaporates.

On the other hand, when your body temperature drops, the hypothalamus signals your blood vessels to constrict, reducing blood flow to the skin and conserving heat. It also triggers shivering, which generates heat through muscle contractions.

Additionally, your thyroid gland plays a role in regulating your metabolism, which can affect your body's heat production. And your adrenal glands release hormones that can also impact your body's response to temperature changes.

So, even though you may not be consciously aware of it, your body is constantly working behind the scenes to keep your temperature within a narrow range, allowing you to function properly in a variety of environments. It's truly a remarkable example of the intricate and automatic processes that keep us alive and well.