MedlinePlus.gov en Twitter: "RT @HHSGov: Spending too much time staring at the screen? �� �� Give your eyes a break with the 20-20-20 rule: Every 20 minutes, look about 2…" / Twitter

MedlinePlus.gov en Twitter: "RT @HHSGov: Spending too much time staring at the screen? �� �� Give your eyes a break with the 20-20-20 rule: Every 20 minutes, look about 2…" / Twitter

RT

@HHSGov

: Spending too much time staring at the screen?

Give your eyes a break with the 20-20-20 rule: Every 20 minutes, look about 2…