Every week, there will be a contest, having to do with a certain topic! If you get the riddle(or riddles) correct, you with receive a gift! THIS WEEKS TOPIC-Science/Health What am I? I start out blue, then as I run I become red, what am I? You could be left handed, or even right! But you use both sides of me! What am I? I am the most used physical part in your body, what am I?