It helps you reduce eye fatigue, reduce the likelyhood of headaches, dry eyes or blurred vision if you spend way too much time in front of the screen.
We have half a dozen exercises that prompt you randomly, from taking a break to looking far out to observing a specific color around you. We would love to hear from you if you have more ideas
If you uncheck "Auto Notify", you'll only see a red eye in the Mac Menu bar with no intrusive notifications.
Only if you are active/working on your screen for the period of time you set. If you log out or when the display is off, the timer is reset.