RYNJ seventh graders have been studying the systems of the human body throughout this year and showcased their knowledge last week at their Health Fair. They have done research on many diseases and how each one can take a specific toll on a part of the body, which in turn has its effect on everyday life. What the students have come to understand is that healthy choices allow you to live an active life, and a healthy immune system helps you ward off many of those diseases they learned about.