4. Wash Your Hands, Human!

The Trick:

Wash your hands regularly, and keep them sanitized.

Why It Works:

Not being careful about washing your hands is one of the easiest way to catch and spread infections and illnesses. Experts at the Centers for Disease Control and Prevention (CDC) say that you should be using water and soap to wash your hands as regularly as possible. And in case that isn’t available, use hand sanitizers that contain at least 60% alcohol.