The parasympathetic nervous system is part of the body's autonomic nervous system (ANS). The ANS deals with essential body functions automatically—all of the processes that happen without you even ...

The parasympathetic nervous system (PSNS) is part of your autonomic nervous system, which includes the nerves and neurotransmitters that control your body’s internal organs to maintain reliable ...

A new study shows that a part of the nervous system, the parasympathetic nervous system, is formed in a way that is different from what researchers previously believed. In this study a new phenomenon ...

The sympathetic nervous system, which helps your heart and other vital organs function all the time, increases activity in response to danger or stress, preparing the body for extra demands. Stress is ...

Late in pregnancy, the human body carefully prepares fetuses for the rigors of life outside the protection of the womb. Levels of cortisol, a stress hormone, ramp up and spike during labor.

If you're like us, you go through your days feeling like there just aren't enough hours to get everything done. You hit the sack exhausted and then — irony of ironies — find yourself tossing and ...