1. The brain has a direct effect on the stomach and intestines. For example, the very thought of eating can release the stomach's juices before food gets there. This connection goes both ways. A troubled intestine can send signals to the brain, just as a troubled brain can send signals to the gut.
2.The brain controls the heart directly through the sympathetic and parasympathetic branches of the autonomic nervous system, which consists of multi-synaptic pathways from myocardial cells back to peripheral ganglionic neurons and further to central preganglionic and premotor neurons.
3.Your brain controls your breathing rate (how fast or slow you breathe), by sensing your body's need for oxygen and its need to get rid of carbon dioxide. Healthy lifestyle habits, such as physical activity and not smoking, can help prevent lung injury and disease.
