Stress can cause goosebumps because it often triggers the same pathways as when we face danger. This is known as the fight or flight response. It is initiated when the brain identifies a danger, either present or impending, and readies the body for action â that is either to fend off the danger (fight response) or maximize the bodyâs resources to flee from the danger (flight response).
1 Symptoms usually appear within one to two days of exposure. 2  Although you typically feel better after a day or two, you're contagious for up to three days after you've recovered. 3  Some people may be contagious for up to two weeks after recovery. 4  Rotavirus.
The time between exposure to the virus and the time you experience symptoms is called the incubation period. The incubation period for the influenza virus is one to four days, with an average of two days for adults.Once the virus enters the body, it begins to multiply.After about a day and a half, these new particles shed off their lining so that they can enter secretions such as saliva and phlegm.he time between exposure to the virus and the time you experience symptoms is called the incubation period. The incubation period for the influenza virus is one to four days, with an average of two days for adults.