Your Brain: The Missing Manual

From a neurological standpoint, your desire for food is ruled by a cocktail of neurotransmitters and hormones that scientists have yet to puzzle out in its entirety.

However, neurons don't stretch everywhere, and they aren't nuanced enough to take every interaction into account. For that reason, your brain has another system that allows it to control the body—the endocrine system.

When your brain needs to exert its control over a body part—either consciously or unconsciously—it simply triggers the right combination of neurons.