It can be found in some animal-based foods in its pre-made form, or found in plants in the form of beta-carotene -- a compound your body digests to form two vitamin A molecules. Yellow and dark green vegetables and fruits are good sources of the carotenes, including beta-carotene.
With the flu, you may feel very weak and fatigued for up to two or three weeks. You'll have muscle aches and periods of chills and sweats as fever comes and goes. You may also have a stuffy or runny nose, headache, and sore throat.
Symptoms of the flu tend to start quickly and can include fever, chills, dry cough, and sore throat. It's easy to confuse a common cold with flu symptoms.However, cold symptoms are usually milder and don't last as long as the flu symptoms. If you become infected with the flu virus, you will usually feel flu symptoms 1 to 4 days later.It is important to note that you can spread the flu to others before your flu symptoms start and for another 3 to 4 days after your flu symptoms appear. (Click Flu Virus for more information about the flu.).ymptoms of the flu tend to start quickly and can include fever, chills, dry cough, and sore throat. It's easy to confuse a common cold with flu symptoms.