Question: How can I stop Eye strain and help prevent headaches?

  Options: 
 A. Follow the 20 20 20 rule: Look at something 20 feet away for 20 seconds every 20 min. while travelling or reading will help prevent eye strain/stress.
 B. Follow the 200 200 200 rule: Look at something 200 feet away for 200 seconds every 200 min. while travelling or reading will help prevent eye strain/stress.
Answer: A