this is called acquired immunity
You could check ChooseMyPlate.org for the serving sizes, serving recommendations, and nutritional values for the major food groups and compare that to your meal from the night before.
Hope this helps!!!
In my oppinon free flu shots from many pharmacies have helped our community greatly. It keeps many safe from the flu virus and can save people's lives.
Depends on what you mean by cold.
If you mean like cold, like tempurature, then wear the smallest amount of cloths, and use air conditioning.