Back to school is such an exciting time. A time for new memories, friends, and lots of time together! But when lots of people are close together, you may be exposed to more germs than usual. 

It's a good thing your body has a special system to protect you; the immune system! The immune system is a defense team protecting your body from germs. Sometimes, germs make it past this layer. One way to protect your immune system this back-to-school season is by washing your hands. 

Try this hidden germs experiment to see the importance of washing hands as a way to keep the immune system strong and the body protected.