The autonomic nervous system (ANS) regulates the functions of our internal organs (the viscera) such as the heart, stomach and intestines.
The flu is contagious a day before and five days to a week after its onset. Young children, people over 65, those with compromised immune systems, and people with a terminal illness are at risk of death from the flu.
A: Flu is spread by airborne particles and is contagious for about 3 to 5 days after symptoms appear. Typical symptoms include fever, headache, muscle pain, extreme fatigue and, sometimes, a runny nose and sore throat. MORE Colds are spread through contact with mucus or saliva.The virus is contagious a day before you start to show signs of a cold, such as sneezing, runny nose, watery eyes or body discomfort. You're contagious as long as symptoms last--about 1 to 2 weeks.Reprinted with permission from Mayo Health Oasis, a project of the Mayo Clinic.: Flu is spread by airborne particles and is contagious for about 3 to 5 days after symptoms appear. Typical symptoms include fever, headache, muscle pain, extreme fatigue and, sometimes, a runny nose and sore throat. MORE.