20-minute rule

If we are looking at a screen for over 20 minutes at a time, this is probably unhealthy. Sure there are requirements and things to get done, but sacrificing one's eyesight is never a good idea either. Those artificial light rays are actually penetrating right to your mind too. 

I have and still like to get up and focus elsewhere for say 5 minute intervals before returning to a task at hand. It also trains our bodies to move around and not stay in hibernation which is good for us along with those around us.

We're all swimming in the same pool.

Thanks.