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.
Flu generally strikes 1 to 3 days after exposure to the virus. The onset of flu often seems sudden: people describe feeling like they've been hit by a truck.. Common flu symptoms include sudden onset, fever and chills, cough, muscle and joint pain, headache, fatigue and weakness. Some people also get a stuffy nose and sore throat. Differentiating Between the Flu and a Cold