Positive emotions generally lead to faster recovery from cardiovascular stress, better sleep, and fewer colds. ... It controls and manages involuntary body functions, such as digestion, blood flow, breathing and heartbeat. ... When the system malfunctions, it may lead to severe and crucial problems, including heart problems, blood pressure problems, erectile dysfunction in men, and trouble with swallowing and breathing. ... In addition, it increases blood pressure and heart rate. ...

• Word Count: 2870
• Approx Pages: 11
• Has Bibliography
• Grade Level: Undergraduate