Lumo is a Mac menu bar app that reminds you to rest your eyes. But not only. It also reminds you to BREATHE — so you avoid email apnea (yes, you hold your breath while staring at screens). And it does it smartly, with productivity in mind. No flashing popup every 10 min that you start ignoring. Just gentle, well-timed nudges. Free to start, with a pro plan for customization.