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Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds. I built a free little web app just for this purpose that I run all da
by coreymaass 12y ago
Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds. I built a free little web app just for this purpose that I run all day http://prntscr.com/5vpbxg http://prntscr.com/5vpbxg Check out http://timerdoro.com http://timerdoro.com or use your phone's timer or something.