This Is Your Endocrine System - Hypothalamus
The hypothalamus controls both our nervous system and our endocrine system. Which adds up to pretty much everything that goes on. It’s the tiny king of a vast realm. About the size of an almond and the shape of a little, lumpy pancake, the hypothalamus tucks up under the base of the brain, part of the brain, but unprotected by the blood/brain barrier I think you should stand and salute every time you read the word ‘hypothalamus.’ That would slow things way down, but perhaps you’d end up filled with an appropriate amount of awe.