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.
Most people show symptoms closer to the 72 hour mark, but it depends on your immune system and the virus you contract. 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.