Covered in 6.2:

-The Central Nervous System is made up of the brain and the spinal cord
-The Peripheral System is made up of the Voluntary (Somatic) Nervous System and the Autonomic Nervous System
-The activities of Autonomic Nervous System do not require conscious thought (digesting food, blinking, breathing), but can be affected by our external environment
-The Autonomic Nervous System is made up of:
-The Enteric: Your gut (digestive tract)
-The Sympathetic: Your fight or flight response
-The Parasympathetic: Your rest and digest function
-We’re supposed to alternate between the sympathetic and parasympathetic nervous system every 1 to 4 hours
-We often we get stuck or “jammed” in the sympathetic nervous due to the stress of modern life
-Yoga can be viewed as a systematic hacking of the nervous system to reset the sympathetic and parasympathetic systems