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.
Influenza's incubation period is 1-4 days with 2 days being the most common for showing symptoms. There are many viruses that cause cold and flu symptoms that are not the common cold or influenza. If you were exposed to one of those it may take up to 7 days before symptoms appear.