The sympathetic nervous system was thought to have evolved with jawed vertebrates. But lampreys—jawless, parasitic fish that suck out the blood of their hosts—have a simple one, per recent research.

Parapluie. That's the French word for umbrella. Para means against. Pluie means rain. A parapluie keeps a rainstorm from getting you soaking wet. Parasympathetic. That is the name of the system that ...

A recent study found that a common upper-body stretch can quickly lower blood pressure. We spoke to an expert about how you ...

The autonomic nervous system innervates all body organs, including the cardiovascular system. Smooth muscle in arteries, arterioles, and veins and pericytes in capillaries receive autonomic ...

One technique gaining global scientific attention is Sudarshan Kriya Yoga. Supported by over 100 peer-reviewed studies, this ...

Each part of the nervous system uses internal checks and balances to regulate its activity, responding to various factors like mood, health status, and the external environment.¹ These regulatory ...