This is just a simple, straightforward reminder message. For example, on Windows, you can use it together with the Task Scheduler to create periodic reminders that it's time to take a break, or a stretch. You could create your Trigger relative to the time of your workstation unlock or logon and your Action could be to open this page with your favorite browser (e.g. after 40 or 50 minutes have passed since worksation unlock). Or you could just have this page open, on schedule, at regular times, e.g. every 1 hour.

gentle reminder to
take a break