Apply defensive tools when contacting toxic chemicals or other dangerous elements. Experts recommend having breaks for 15-20 minutes during the hard working day in office. It is critical to set up screen options on your computer so that the screen does a minimum damage to the vision. It is critical to control chronic health diseases (e.g., diabetes, high blood pressure). Try to consume more fruits and vegetables or supplements that have Omega-3 fatty acids. Finally, quit smoking!