Most of us are familiar with the concept that overuse of a specific body part might result in an injury. Major league baseball pitchers experience this all the time – even little leaguers often suffer from elbow or shoulder damage from too much throwing. Ergonomists recommend microbreaks—breaking up long stretches of repetitive work—as an effective strategy to prevent discomfort that may lead to a soft-tissue injury.

The 20 20 20 Rule: A break for your eyes

The 20 20 20 Rule is a safety microbreak concept developed by optometrist Dr. Jeffrey Anshel. It states: every 20 minutes, look at something at least 20 feet away, for 20 seconds to reduce fatigue and eye strain.