We are all aware—sometimes uncomfortably so—when our stomachs are grumbling. But most hunger signals are communicated in an imperceptable cycle throughout our bodies. Feelings of hunger and satisfaction are the result of many independent signals. Different organs are involved in monitoring blood chemistry, prompting the communication of hunger or satiety signals to the brain. These messages are received by the hypothalamus, which regulates basic physiological needs. Separate areas of the hypothalamus then send signals to other parts of the brain, motivating us to increase or decrease eating.