In what way does it regulate the nervous system Sir?

It is generally accepted that the effects of acupuncture on the body involves the release of opioid peptides in the body. The opioid peptides are a comprised of endorphins, enkephallins, and dynorphins, types of neurotransmitters, and are found in neurons throughout the body. Opioid peptides are thought to be closely involved with the perception of pain in the central nervous system ;

In the body,Half the meridians are yin, which seems to correspond to the parasympathetic nervous system. In this theory stimulating these meridians leads to relaxation, a slower heart, reduced blood pressure, muscular release,etc. The other half of the meridians are therefore yang, which is said to produce increased sympathetic nervous system activity - tension, a faster heart beat, higher blood pressure, and more contraction in the muscles.Acupoint Therapy focuses on bringing the yin and yang (parasympathetic and sympathetic) back into balance.