(KTNV) -- Back-to-school often means back to germs for millions of school kids. According to the Centers for Disease Control and Prevention, elementary school children (on average) get eight to 12 colds or cases of the flu each school year.
The number one "germiest" place in the average school: the drinking fountain. Cafeteria trays are another germ hot zone.
So, how do you and your kids stay safe?
Experts say make sure they get plenty of sleep. Not enough rest lowers the immune system's ability to fight off infection.
Also, kids should be getting at least 40 minutes of exercise daily.
Lastly, make sure they wash their hands often with soap and water. It is the best way to keep germs from entering the body.