One of the best examples of how Yin-Yang work within the human body is the sympathetic and parasympathetic autonomic nervous systems. These are two branches of your nervous systems that control automatic operations of bodily components, such as breathing, blinking, and more.

the parasympathetic goes along with Yin to slow everything down, whereas the Yang of the sympathetic system speeds everything up. With the two working in harmony, your body can maintain an ideal balance.

The sympathetic nervous system is in control of the body’s natural fight-flight-freeze response This response is activated whenever a person is stressed, anxious, or in fear.

The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS) both release hormones to control this fight-flight-freeze response. For instance, the SNS releases the hormones norepinephrine, epinephrine, and catecholamines to increase the body’s heart rate. On the other hand, the PNS, which is essentially a rest and digest system, releases the hormone acetylcholine, which is used to reduce the heart’s rate.

When the SNS activates the fight-flight-freeze response it provides the human body with all we need to actively respond to any threat that might face us, whether that means we fight, run away, or freeze in place. Then, once we have achieved the safety made possible by the SNS, the PNS allows us to once again gain peace by producing calming hormones that allow the body to rest, renew, and repair itself.

In my first book, The Key to Happiness, I discuss in-depth how the sympathetic and parasympathetic nervous systems are both impacted by meditation. You can learn all about the scientifically-proven benefits of meditation there.

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